Compile also the files in parser/sdp

Makefile.sources

@@ -14,6 +14,7 @@
 sources=$(filter-out $(auto_gen), $(wildcard *.c) $(wildcard mem/*.c) \
 		$(wildcard parser/*.c) $(wildcard parser/digest/*.c) \
 		$(wildcard parser/contact/*.c) $(wildcard db/*.c) \
+		$(wildcard parser/sdp/*.c) \
 		$(wildcard rand/*.c) $(wildcard rand/isaac/*.c) ) \
 		$(wildcard cfg/*.c) $(auto_gen)
 ifeq ($(CORE_TLS), 1)