[gtk-doc] (6 commits) Non-fast-forward update to branch win-no-msys

[Chun-wei Fan <fanchunwei src gnome org>]

The branch 'win-no-msys' 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:

  a727142... tests/gobject/src: Export symbols on MSVC builds
  e209c9d... meson.build: Fix gtkdoc_uninstalled.py on Windows
  da31a82... test/helpers/*.py: Fix calling scripts on Windows
  40163bf... gtkdoc/meson.build: Set EXEEXT properly
  947b39c... scangobj: Support Visual Studio compilers
  a62b919... Support native Windows shells for the scangobj tests

Commits added to the branch:

  b400827... tests/gobject/src: Export symbols on MSVC-style builds
  c5cf9f4... meson.build: Fix gtkdoc_uninstalled.py on Windows
  c1e2b97... test/helpers/*.py: Fix calling scripts on Windows
  bfa958d... gtkdoc/meson.build: Set EXEEXT properly
  4c24708... scangobj: Support Visual Studio compilers
  8af0ef5... Support native Windows shells for the scangobj tests