Fix pointing GTK+ to the gtkrc we install in the bundle
Fix pointing GTK+ to the gtkrc we install in the bundle

Setting GTK_SYSCONFDIR doesn't work - GTK+ doesn't pay attention
to that environment variable. Instead set GTK2_RC_FILES appropriately.

Fixing this allows Reinteract to pick up the Quartz native theme
as intended.

jbaayen/reinteract,alexey4petrov/reinteract,johnrizzo1/reinteract,rschroll/reinteract,jbaayen/reinteract,jbaayen/reinteract,rschroll/reinteract,alexey4petrov/reinteract,johnrizzo1/reinteract,rschroll/reinteract,johnrizzo1/reinteract,alexey4petrov/reinteract