Fix format-security warnings This patch should fix the FTBFS report in Debian sid (bug 997162): the format string was omitted when displaying the message prefix and the mcabber version.

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