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/
SIMPLESOURCES = [
'http.c',
'http.h',
'ntlm.c',
'ntlm.h',
'simple.c',
'simple.h',
'sipmsg.c',
'sipmsg.h'
]
if DYNAMIC_SIMPLE
simple_prpl = shared_library('simple', SIMPLESOURCES,
dependencies : [libpurple_dep, nettle, glib, gio, ws2_32],
install : true, install_dir : PURPLE_PLUGINDIR)
endif