gsocket.h: Run-time can no longer be built without network OS headers available.

2010-04-13  Joel Sherrill <joel.sherrill@oarcorp.com>

	* gsocket.h: Run-time can no longer be built without network
	OS headers available.  Changing RTEMS GNAT build procedure to
	reflect this and letting run-time build use network .h files.

From-SVN: r158381