[killpresence] Add option -p to /killpresence (to send a presence probe)
/killpresence -p fulljid is equivalent to both
/killpresence fulljid followed by
/probe barejid
if INSTALL_MODULE_EXTSAYNG
pkglib_LTLIBRARIES = libextsay.la
libextsay_la_SOURCES = extsay.c
libextsay_la_LDFLAGS = -module -avoid-version -shared
LDADD = $(GLIB_LIBS) $(MCABBER_LIBS)
AM_CPPFLAGS = -I$(top_srcdir) $(GLIB_CFLAGS) $(MCABBER_CFLAGS)
endif