pidgin/pidgin

Merged in dequisdequis/pidgin (pull request #167)

2016-11-01, Gary Kramlich
9aeedc02a0e4
Merged in dequisdequis/pidgin (pull request #167)

Facebook: port fixes from bitlbee-facebook
installed_m4=purple.m4
EXTRA_DIST=$(installed_m4) as-ac-expand.m4
m4datadir=$(datadir)/aclocal
m4data_DATA=$(installed_m4)