inclhack.def: Add missing declaration of getpagesize() to unistd.h on Solaris 2.5.1.

	* fixinc/inclhack.def: Add missing declaration of getpagesize()
	to unistd.h on Solaris 2.5.1.
	Fix prototype of recv() and send() in sys/socket.h on
	Solaris 2.5.1 and 2.6.
	* fixinc/tests/base/unistd.h: Add solaris_unistd fix test.
	* fixinc/tests/base/sys/socket.h: Add solaris_socket test.
	* fixinc/check.tpl: Use 'diff -c', not 'diff -u'.
	* fixinc/fixincl.x: Regenerate.

From-SVN: r67206