don't need global_capture_opts don't need to have it declared and thus
don't need capture_options defined.
Include gtk/capture_globals in the files in question.
Change some more capture_opts references to refer to
global_capture_opts.
Change some global_capture_opts references in routines with a
capture_opts argument to refer to capture_opts.
The structure type is capture_options, not capture_opts; fix some
references.
Include <sys/types.h>, if it's present, in capture_opts.h, so we get
gid_t defined.
Clean up indentation.
svn path=/trunk/; revision=25574
Guy Harris