rtp_media_server: Makefile - support for FreeBSD build

- updated LIBS and DEFS variables, making them consistent with
the rest of modules.

(cherry picked from commit cda0547)

src/modules/rtp_media_server/Makefile

@@ -2,11 +2,11 @@ include ../../Makefile.defs
 auto_gen=
 NAME=rtp_media_server.so
 
-DEFS+=-I$(LOCALBASE)/lib
+DEFS+=-I$(LOCALBASE)/include
 
 ORTPLIBS=-lortp
 BCUNITLIBS=-lbcunit
 MS2LIBS=-lmediastreamer
 
-LIBS=$(ORTPLIBS) $(BCUNITLIBS) $(MS2LIBS)
+LIBS+=-L$(LOCALBASE)/lib $(ORTPLIBS) $(BCUNITLIBS) $(MS2LIBS)
 include ../../Makefile.modules