Cleanup the public vs private ISCAPI remnants

Since all the libraries are internal now, just cleanup the ISCAPI remnants
in isc_socket, isc_task and isc_timer APIs.  This means, there's one less
layer as following changes have been done:

 * struct isc_socket and struct isc_socketmgr have been removed
 * struct isc__socket and struct isc__socketmgr have been renamed
   to struct isc_socket and struct isc_socketmgr
 * struct isc_task and struct isc_taskmgr have been removed
 * struct isc__task and struct isc__taskmgr have been renamed
   to struct isc_task and struct isc_taskmgr
 * struct isc_timer and struct isc_timermgr have been removed
 * struct isc__timer and struct isc__timermgr have been renamed
   to struct isc_timer and struct isc_timermgr
 * All the associated code that dealt with typing isc_<foo>
   to isc__<foo> and back has been removed.
70 jobs for !4911 with ondrej/cleanup-ISCAPI-remnants in 19 minutes and 44 seconds (queued for 8 seconds)
latest detached
Status Job ID Name Coverage
  Autoconf
passed #1649025
amd64 linux
autoreconf

00:00:18

 
  Precheck
passed #1649027
amd64 linux
clang-format

00:00:17

passed #1649028
amd64 linux
coccinelle

00:03:29

passed #1649029
amd64 linux
danger

00:00:14

passed #1649026
amd64 linux
misc

00:00:18

passed #1649030
amd64 linux
tarball-create

00:01:37

 
  Build
passed #1649041
amd64 linux
clang:asan

00:02:08

passed #1649045
amd64 linux
clang:buster:amd64

00:00:50

passed #1649048
amd64 libvirt
clang:freebsd11:amd64

00:01:16

passed #1649049
amd64 libvirt
clang:freebsd12:amd64

00:01:02

passed #1649050
amd64 libvirt
clang:openbsd:amd64

00:02:42

passed #1649043
amd64 linux
clang:tsan

00:01:08

passed #1649031
amd64 linux
gcc:alpine3.13:amd64

00:01:06

passed #1649040
amd64 linux
gcc:asan

00:01:34

passed #1649035
amd64 linux
gcc:buster:amd64

00:00:52

passed #1649032
amd64 linux
gcc:centos7:amd64

00:01:00

passed #1649033
amd64 linux
gcc:centos8:amd64

00:01:01

passed #1649039
amd64 linux
gcc:focal:amd64

00:00:56

passed #1649044
amd64 linux
gcc:mutexatomics

00:00:57

passed #1649037
amd64 linux
gcc:out-of-tree

00:01:04

passed #1649036
amd64 linux
gcc:sid:amd64

00:01:12

passed #1649046
amd64 linux
gcc:softhsm2.4

00:01:02

passed #1649047
amd64 linux
gcc:softhsm2.6

00:00:50

passed #1649034
amd64 linux
gcc:stretch:amd64

00:00:54

passed #1649042
amd64 linux
gcc:tsan

00:01:05

passed #1649038
amd64 linux
gcc:tumbleweed:amd64

00:01:02

passed #1649051
amd64 windows
msvc:windows:amd64

00:01:20

 
  Unit
passed #1649061
amd64 linux
unit:clang:asan

00:02:16

passed #1649065
amd64 linux
unit:clang:buster:amd64

00:01:26

passed #1649068
amd64 libvirt
unit:clang:freebsd11:amd64

00:02:03

passed #1649069
amd64 libvirt
unit:clang:freebsd12:amd64

00:01:46

passed #1649070
amd64 libvirt
unit:clang:openbsd:amd64

00:03:26

passed #1649063
amd64 linux
unit:clang:tsan

00:03:32

passed #1649052
amd64 linux
unit:gcc:alpine3.13:amd64

00:01:35

passed #1649060
amd64 linux
unit:gcc:asan

00:01:56

passed #1649056
amd64 linux
unit:gcc:buster:amd64

00:02:27

passed #1649053
amd64 linux
unit:gcc:centos7:amd64

00:01:30

passed #1649054
amd64 linux
unit:gcc:centos8:amd64

00:01:27

passed #1649059
amd64 linux
unit:gcc:focal:amd64

00:01:29

passed #1649064
amd64 linux
unit:gcc:mutexatomics

00:01:27

passed #1649057
amd64 linux
unit:gcc:sid:amd64

00:01:19

passed #1649066
amd64 linux
unit:gcc:softhsm2.4

00:01:28

passed #1649067
amd64 linux
unit:gcc:softhsm2.6

00:01:25

passed #1649055
amd64 linux
unit:gcc:stretch:amd64

00:00:18

passed #1649062
amd64 linux
unit:gcc:tsan

00:04:27

passed #1649058
amd64 linux
unit:gcc:tumbleweed:amd64

00:01:23

 
  System
passed #1649080
amd64 linux
system:clang:asan

00:13:40

passed #1649084
amd64 linux
system:clang:buster:amd64

00:12:19

passed #1649087
amd64 libvirt
system:clang:freebsd11:amd64

00:12:00

failed #1649088
amd64 libvirt
system:clang:freebsd12:amd64

00:12:03

passed #1649082
amd64 linux
system:clang:tsan

00:15:40

failed #1649071
amd64 linux
system:gcc:alpine3.13:amd64

00:13:33

passed #1649079
amd64 linux
system:gcc:asan

00:13:58

passed #1649075
amd64 linux
system:gcc:buster:amd64

00:13:33

passed #1649072
amd64 linux
system:gcc:centos7:amd64

00:11:53

passed #1649073
amd64 linux
system:gcc:centos8:amd64

00:11:59

failed #1649078
amd64 linux
system:gcc:focal:amd64

00:13:25

passed #1649083
amd64 linux
system:gcc:mutexatomics

00:12:59

passed #1649076
amd64 linux
system:gcc:sid:amd64

00:12:49

failed #1649085
amd64 linux
system:gcc:softhsm2.4

00:13:30

passed #1649086
amd64 linux
system:gcc:softhsm2.6

00:12:21

passed #1649074
amd64 linux
system:gcc:stretch:amd64

00:11:44

failed #1649081
amd64 linux
system:gcc:tsan

00:16:43

passed #1649077
amd64 linux
system:gcc:tumbleweed:amd64

00:12:16

 
  Docs
passed #1649089
amd64 linux
docs

00:00:57

 
  Postcheck
passed #1649093
amd64 linux
cppcheck

00:00:56

passed #1649090
amd64 linux
flake8

00:00:21

passed #1649094
amd64 linux
gcov

00:00:33

77.0%
passed #1649091
amd64 linux
pylint

00:00:24

passed #1649092
amd64 linux
scan-build

00:04:29

 
Name Stage Failure
failed
system:gcc:tsan System
FAIL inline (exit status: 1)

$ find bin -name 'tsan.*' -exec python3 util/parse_tsan.py {} \;
Uploading artifacts for failed job
Uploading artifacts...
untracked: found 2041 files

Uploading artifacts as "archive" to coordinator... ok
id=1649081 responseStatus=201 Created token=kX9ytryN
Cleaning up file based variables
ERROR: Job failed: exit code 1
failed
system:gcc:alpine3.13:amd64 System
FAIL inline (exit status: 1)

$ test -n "${OUT_OF_TREE_WORKSPACE}" && mv "${OUT_OF_TREE_WORKSPACE}" "${CI_PROJECT_DIR}"
Uploading artifacts for failed job
Uploading artifacts...
untracked: found 2041 files

Uploading artifacts as "archive" to coordinator... ok
id=1649071 responseStatus=201 Created token=8Fsevj1y
Cleaning up file based variables
ERROR: Job failed: exit code 1
failed
system:gcc:softhsm2.4 System
FAIL inline (exit status: 1)

$ test -n "${OUT_OF_TREE_WORKSPACE}" && mv "${OUT_OF_TREE_WORKSPACE}" "${CI_PROJECT_DIR}"
Uploading artifacts for failed job
Uploading artifacts...
untracked: found 2049 files

Uploading artifacts as "archive" to coordinator... ok
id=1649085 responseStatus=201 Created token=y4kCGxVK
Cleaning up file based variables
ERROR: Job failed: exit code 1
failed
system:gcc:focal:amd64 System
FAIL inline (exit status: 1)

$ test -n "${OUT_OF_TREE_WORKSPACE}" && mv "${OUT_OF_TREE_WORKSPACE}" "${CI_PROJECT_DIR}"
Uploading artifacts for failed job
Uploading artifacts...
untracked: found 2000 files

Uploading artifacts as "archive" to coordinator... ok
id=1649078 responseStatus=201 Created token=5Kd4FzEA
Cleaning up file based variables
ERROR: Job failed: exit code 1
failed
system:clang:freebsd12:amd64 System

$ test -n "${OUT_OF_TREE_WORKSPACE}" && mv "${OUT_OF_TREE_WORKSPACE}" "${CI_PROJECT_DIR}"
Uploading artifacts for failed job
Uploading artifacts...
Runtime platform
arch=amd64 os=freebsd pid=77126 revision=2ebc4dc4 version=13.9.0
untracked: found 1486 files

Uploading artifacts as "archive" to coordinator... ok
id=1649088 responseStatus=201 Created token=Bj_FG12h
Cleaning up file based variables
ERROR: Job failed: exit status 1