pidgin/pidgin

Make it possible so that libpurple plugins can use functions defined in libpurple/glibcompat.h

Testing Done:
Compiled on linux and raspberry pi os which fixes that build.

Reviewed at https://reviews.imfreedom.org/r/169/
gestures_SOURCES = [
'gestures.c',
'gstroke.h',
'gstroke-internal.h',
'stroke.c',
'stroke-draw.c'
]
if PLUGINS
gestures = library('gestures', gestures_SOURCES,
dependencies : [libpurple_dep, libpidgin_dep, glib],
name_prefix : '',
install : true, install_dir : PIDGIN_PLUGINDIR)
endif