Do not block system messages when block_unsubscribed is set This was broken in 0.10.0 when switching to LM. Reported by roughnecks in the MUC room, issue spotted by Hermitifier.

SUBDIRS = mcabber doc modules
ACLOCAL_AMFLAGS = -I macros
if INSTALL_HEADERS
pkgconfigdir = $(libdir)/pkgconfig
pkgconfig_DATA = mcabber.pc
endif