[gimp] (5 commits) Non-fast-forward update to branch wip/bug792787-debug-stacktrace-GUI

[Jehan Pagès <jehanp src gnome org>]

The branch 'wip/bug792787-debug-stacktrace-GUI' 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:

  991cf70... app: new error dialog to backtrace and encourage people to 
  d31295d... app: reimplement gimp_get_stack_trace().
  78749b7... app, tools: add backtrace GUI for crashes as well.

Commits added to the branch:

  db3259a... app: new error dialog to backtrace and encourage people to 
  d59ea52... app: reimplement gimp_get_stack_trace().
  3ab1f63... app, tools: add backtrace GUI for crashes as well.
  13c2b9e... app: add a "generate-backtrace" preference in GimpCoreConfi
  ecd2ae4... app: test G_OS_WIN32 rather than G_OS_UNIX for new backtrac