pidgin/pidgin

Rename gtkstyle.[ch] to pidginstyle.[ch] and fix up the dark mode check.

2020-11-10, Gary Kramlich
559881c7bf92
Rename gtkstyle.[ch] to pidginstyle.[ch] and fix up the dark mode check.

Testing Done:
* Ran with arc-dark and adwatia.
* Stepped through the debugger to make sure it was detected right.
* Joined a muc with both themes, the colors change but there're impossible to see as most of that code is elsewhere and not addressed in this review request.
* Also noticed that nicks in mucs are doubled, not sure what, but it's that way with out this patch as well.

Reviewed at https://reviews.imfreedom.org/r/208/
NOVELLSOURCES = [
'nmfield.h',
'nmfield.c',
'nmconn.h',
'nmconn.c',
'nmconference.h',
'nmconference.c',
'nmcontact.h',
'nmcontact.c',
'nmevent.h',
'nmevent.c',
'nmmessage.h',
'nmmessage.c',
'nmrequest.h',
'nmrequest.c',
'nmrtf.h',
'nmrtf.c',
'nmuser.h',
'nmuser.c',
'nmuserrecord.h',
'nmuserrecord.c',
'novell.h',
'novell.c'
]
if DYNAMIC_NOVELL
novell_prpl = shared_library('novell', NOVELLSOURCES,
dependencies : [libpurple_dep, glib, ws2_32],
install : true, install_dir : PURPLE_PLUGINDIR)
endif