[gimp] (5 commits) Non-fast-forward update to branch wip/Jehan/meson-windows-official

[Jehan <jehanp src gnome org>]

The branch 'wip/Jehan/meson-windows-official' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  8099d6b... configure, tools: colorsvg2png must be built as native buil
  ca0350c... libgimp: fix linking in autotools when cross-compiling.
  49732c2... meson, plug-ins: further fix the no-pkg-config test for lib
  7a22a6b... configure, meson: the build tool depends on very old glib.
  d85e4e8... INSTALL: update with new recommendation of meson for Window

Commits added to the branch:

  1866b4c... configure, tools: colorsvg2png must be built as native buil
  9242cbd... libgimp: fix linking in autotools when cross-compiling.
  1c730ce... meson, plug-ins: further fix the no-pkg-config test for lib
  b83450f... configure, meson: the build tool depends on very old glib.
  588d11d... INSTALL: update with new recommendation of meson for Window