gskglcompiler.c: Relax check for GL 3.x+ legacy contexts

On Windows with nVidia drivers at least, when we create a legacy context
via wglCreateContext(), we may still get a (W)GL 4.x context.  Allow
such contexts to also use GLSL version 130 instead of 110, so that
things do continue to work.
13 jobs for wgl-legacy in 36 minutes and 54 seconds (queued for 2 seconds)
Status Name Job ID Coverage
  .Pre
passed style-check-diff #1648787

00:09:42

 
  Build
passed fedora-x86_64 #1648788

00:22:21

passed installed-tests #1648790

00:21:26

passed macos #1648792
macos

00:13:28

passed msys2-mingw64 #1648791
win32-ps

00:06:41

passed release-build #1648789

00:19:32

passed vs2017-x64 #1648793
win32-ps

00:12:15

 
  Analysis
failed asan-build #1648795
asan allowed to fail

00:20:28

passed static-scan #1648794

00:30:35

 
  Docs
passed reference #1648796

00:14:58

 
  Flatpak
manual flatpak-manual:demo #1648797
flatpak allowed to fail manual
manual flatpak-manual:icon-browser #1648799
flatpak allowed to fail manual
manual flatpak-manual:widget-factory #1648798
flatpak allowed to fail manual
 
Name Stage Failure
failed
asan-build Analysis
 - a11y: 22 total, 22 pass, 0 fail
Processing gtk suite tools:
- tools: 4 total, 4 pass, 0 fail
Processing gtk suite reftest:
- reftest: 163 total, 161 pass, 2 fail
Processing gtk suite gtk+slow:
- gtk+slow: 1 total, 1 pass, 0 fail
Cleaning up project directory and file based variables
ERROR: Job failed: exit code 1