bumped to v3.0.7

HISTORY

-v3.0.7 - in progress
+v3.0.7 - 14 Jun 2012
 	* Fixed initialization of frame mutexes
 	* Abstracted serial I/O further for Win32 port
 	* General tidy of codebase

make/libconfig.mk

 LIBMAJ:=               3
 LIBMIN:=               0
-LIBREV:=               6
+LIBREV:=               7
 
 LIBFULLREV:=           $(LIBMAJ).$(LIBMIN).$(LIBREV)