report "$CC --version" output as part of the configure summary

(cherry picked from commit a6f43574)
14 jobs for report-compiler-version-v9_11 in 7 minutes and 58 seconds (queued for 12 seconds)
Status Job ID Name Coverage
  Precheck
passed #56146
amd64 docker linux
precheck:debian:sid:amd64

00:00:19

 
  Build
passed #56147
amd64 docker linux
build:centos:centos6:amd64

00:02:23

passed #56148
amd64 docker linux
build:centos:centos7:amd64

00:02:31

passed #56149
amd64 docker linux
build:debian:sid:amd64

00:01:47

passed #56150
i386 docker linux
build:debian:sid:i386

00:02:34

 
  Test
passed #56159
amd64 docker linux
install:debian:sid:amd64

00:01:50

passed #56155
amd64 docker linux
systemtest:centos:centos6:amd64

00:04:40

passed #56156
amd64 docker linux
systemtest:centos:centos7:amd64

00:04:44

passed #56157
amd64 docker linux
systemtest:debian:sid:amd64

00:04:52

passed #56158
i386 docker linux
systemtest:debian:sid:i386

00:05:01

passed #56151
amd64 docker linux
unittest:centos:centos6:amd64

00:01:22

passed #56152
amd64 docker linux
unittest:centos:centos7:amd64

00:01:23

passed #56153
amd64 docker linux
unittest:debian:sid:amd64

00:01:20

passed #56154
i386 docker linux
unittest:debian:sid:i386

00:01:06