add md of the db dir to msvc build process. Add yet to be completed gsm codec.

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@203 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/codec/mod_codec_gsm/Makefile

@@ -0,0 +1,12 @@
+CFLAGS += -I/usr/local/include/libgsm
+LDFLAGS +=-lgsm
+
+$(MOD).so: $(MOD).c
+	$(CC) $(CFLAGS) -fPIC -c $(MOD).c -o $(MOD).o
+	$(CC) $(SOLINK) $(MOD).o -o $(MOD).so $(LDFLAGS) -lspeex
+
+all:	$(MOD).so
+
+clean:
+	rm -fr *.so *.o *~
+