[glib] (30 commits) ...Merge branch '600-drop-volatile' into 'master'

[Philip Withnall <pwithnall src gnome org>]

Summary of changes:

  fab561f... gobject: Drop use of volatile from get_type() macros
  a6ce0e7... tests: Fix non-atomic access to a shared variable
  ea746c7... tests: Fix non-atomic access to a shared variable
  3dda662... tests: Drop unnecessary volatile qualifiers from tests
  7f905ff... tests: Fix non-atomic access to some shared variables
  f4607de... tests: Drop unnecessary volatile qualifiers from tests
  3361240... gdbusconnection: Drop unnecessary volatile qualifiers from 
  7c7623c... gdbuserror: Drop unnecessary volatile qualifiers from varia
  74250cd... gio: Drop unnecessary volatile qualifiers from internal var
  e4e8868... kqueue: Fix unlocked access to shared variable
  7cdb687... tests: Drop unnecessary volatile qualifiers from tests
  1a7f000... tests: Fix non-atomic access to some shared variables
  3c64845... gatomic: Drop unnecessary volatile qualifiers from internal
  9474655... gatomic: Drop unnecessary volatile qualifiers from macro va
  1314ff9... glib: Drop unnecessary volatile qualifiers from internal va
  08d04d0... gobject: Drop unnecessary volatile qualifiers from internal
  eee7e3c... gmessages: Drop unnecessary volatile qualifiers from macro 
  8a87069... gtypes: Drop volatile qualifier from gatomicrefcount
  46bae4f... gatomicarray: Drop volatile qualifier from GAtomicArray API
  334f695... gobject: Drop volatile qualifier from GObject.ref_count
  8a112c3... tests: Drop unnecessary volatile qualifiers from tests
  daf90bf... build: Drop unnecessary volatile qualifiers from configure 
  0604f58... gdbusprivate: Avoid a warning about a statement with no eff
  2d03f99... tests: Add comment to volatile atomic tests
  6bd0a4b... gthread: Use g_atomic() primitives correctly in destructor 
  041dd8b... gtype: Fix some typos in comments
  47da8ec... gtype: Add some missing atomic accesses to init_state
  7d417f8... gresource: Fix a pointer mismatch with an atomic load
  83e48d8... docs: Document not to use `volatile` qualifiers
  936a071... Merge branch '600-drop-volatile' into 'master'