[gobject-introspection] (8 commits) Non-fast-forward update to branch warn-flags

[Christoph Reiter <creiter src gnome org>]

The branch 'warn-flags' 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:

  12c7d34... build: enable -Wcast-function-type
  b86cde0... g-ir-generate: fix missing error handling for command line 
  0aadfb9... build: enable -Wshadow
  fe4325b... build: enable -Wsign-compare
  1d02810... build: enable -Wimplicit-fallthrough
  66bcead... build: enable -Wtype-limits
  5d69382... build: enable -Wswitch-default
  cb6b380... build: enable -Wredundant-decls

Commits added to the branch:

  54e8b9b... build: enable -Wcast-function-type
  b76ffdc... g-ir-generate: fix missing error handling for command line 
  ea8d9cd... build: enable -Wshadow
  5e61825... build: enable -Wsign-compare
  faa39ef... build: enable -Wimplicit-fallthrough
  e552057... build: enable -Wtype-limits
  9535fc4... build: enable -Wswitch-default
  77b1ca0... build: enable -Wredundant-decls