Added README-RTEMS and tweaked the makefiles

git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@477 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/build/rules.mak b/build/rules.mak
index 6a25b17..a77bc57 100644
--- a/build/rules.mak
+++ b/build/rules.mak
@@ -154,7 +154,7 @@
 	for F in $(FULL_SRCS); do \
 	   if test -f $$F; then \
 	     echo "$(OBJDIR)/" | tr -d '\n' >> $(DEP_FILE); \
-	     if $(CC_NAME) -M $(DEPFLAGS) $$F | sed '/^#/d' >> $(DEP_FILE); then \
+	     if $(CC) -M $(DEPFLAGS) $$F | sed '/^#/d' >> $(DEP_FILE); then \
 		true; \
 	     else \
 		echo 'err:' >> $(DEP_FILE); \