libcompat: added dummy.c from the devlopment branch to fix compilation on...

libcompat: added dummy.c from the devlopment branch to fix compilation on setups, which don't rely on libcompat

compat/Makefile.am

 noinst_LTLIBRARIES = libcompat.la
-libcompat_la_SOURCES =
+libcompat_la_SOURCES = dummy.c
 libcompat_la_LIBADD = $(LTLIBOBJS)
 libcompat_la_LDFLAGS = -no-undefined
+
+BUILT_SOURCES = dummy.c
+CLEANFILES = dummy.c
+
+dummy.c:
+	rm -f dummy.c
+	echo '/* Automatically generated */' > dummy.c
\ No newline at end of file