cleanup cfg_parse_buffer* functions

cfg_parse_buffer() now has the same signature as the former
cfg_parse_buffer4(). cfg_parse_buffer{2,3,4}() have been removed.
42 jobs for !1377 with 323-cleanup-cfg in 16 minutes and 29 seconds (queued for 5 seconds)
detached
Status Job ID Name Coverage
  Precheck
passed #156941
amd64 linux
🐞:sid:amd64

00:00:36

passed #156940
amd64 linux
misc:sid:amd64

00:00:16

 
  Build
passed #156951
amd64 linux
asan:sid:amd64

00:02:04

passed #156952
amd64 linux
clang:stretch:amd64

00:01:34

passed #156953
i386 linux
clang:stretch:i386

00:01:40

passed #156942
amd64 linux
docs:sid:amd64

00:00:43

passed #156950
amd64 linux
gcc:bionic:amd64

00:01:25

passed #156943
amd64 linux
gcc:centos6:amd64

00:01:43

passed #156944
amd64 linux
gcc:centos7:amd64

00:01:52

passed #156945
amd64 linux
gcc:jessie:amd64

00:01:17

passed #156947
amd64 linux
gcc:sid:amd64

00:01:35

passed #156948
i386 linux
gcc:sid:i386

00:01:30

passed #156946
amd64 linux
gcc:stretch:amd64

00:01:18

passed #156949
amd64 linux
gcc:xenial:amd64

00:01:21

passed #156955
amd64 linux
noassert:sid:amd64

00:01:35

passed #156954
amd64 linux
pkcs11:sid:amd64

00:01:28

 
  Test
passed #156964
amd64 linux
install:gcc:sid:amd64

00:02:19

passed #156973
amd64 linux
system:asan:sid:amd64

00:08:10

passed #156971
amd64 linux
system:gcc:bionic:amd64

00:06:28

passed #156956
amd64 linux
system:gcc:centos6:amd64

00:06:37

passed #156958
amd64 linux
system:gcc:centos7:amd64

00:05:56

passed #156960
amd64 linux
system:gcc:jessie:amd64

00:06:55

passed #156965
amd64 linux
system:gcc:sid:amd64

00:06:04

passed #156967
i386 linux
system:gcc:sid:i386

00:06:40

passed #156980
linux amd64
system:gcc:stretch:amd64

00:06:17

passed #156969
amd64 linux
system:gcc:xenial:amd64

00:07:01

passed #156978
amd64 linux
system:noassert:sid:amd64

00:07:19

passed #156981
linux amd64
system:pkcs11:sid:amd64

00:06:17

passed #156974
amd64 linux
unit:asan:sid:amd64

00:00:59

passed #156975
amd64 linux
unit:clang:stretch:amd64

00:00:49

passed #156972
amd64 linux
unit:gcc:bionic:amd64

00:00:49

passed #156957
amd64 linux
unit:gcc:centos6:amd64

00:00:51

passed #156959
amd64 linux
unit:gcc:centos7:amd64

00:01:31

passed #156961
amd64 linux
unit:gcc:jessie:amd64

00:00:31

passed #156966
amd64 linux
unit:gcc:sid:amd64

00:00:44

passed #156968
i386 linux
unit:gcc:sid:i386

00:00:44

passed #156963
amd64 linux
unit:gcc:stretch:amd64

00:00:50

passed #156970
amd64 linux
unit:gcc:xenial:amd64

00:00:57

passed #156979
amd64 linux
unit:noassert:sid:amd64

00:00:52

passed #156977
amd64 linux
unit:pkcs11:sid:amd64

00:00:50

failed #156962
amd64 linux
system:gcc:stretch:amd64

00:06:47

failed #156976
amd64 linux
system:pkcs11:sid:amd64

00:07:28