do a little bit better dependency tracking with module targets when the core is…

do a little bit better dependency tracking with module targets when the core is modified.  Fix for FSBUILD-19

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@6015 d0543943-73ff-0310-b7d9-9358b9ac24b2

Makefile.am

@@ -11,6 +11,8 @@ BASE        = $(switch_srcdir)
 OSARCH=`uname -s`
 
 .DEFAULT:
+	@target=`echo $@ | sed -e 's|^.*-||'`; \
+         if test "$$target" = "install"; then $(MAKE) $(AM_MAKEFLAGS) core_install; else $(MAKE) $(AM_MAKEFLAGS) core ; fi;
 	@cd src/mod && $(MAKE) $(AM_MAKEFLAGS) $@
 
 libfreeswitch_la_SOURCES	= \