grim/purple-spasm

rename all purple_spasm_* function to just spasm_* functions (some other cleanups too)
# install the icons if pidgin is installed
PIDGIN = dependency('pidgin', version: '>=2.0.0', required: false)
if PIDGIN.found()
pidginpixmapdir = '@0@/pixmaps/pidgin/protocols'.format(PIDGIN.get_pkgconfig_variable('datadir'))
foreach dir : ['16', '22', '48', 'scaled']
install_subdir(
dir,
install_dir: pidginpixmapdir,
)
endforeach
endif