2009-06-22  Thomas Quinot  <quinot@adacore.com>

	* exp_ch3.adb: Minor code reorganization (avoid an unnecessary tree
	copy).

2009-06-22  Ed Falis  <falis@adacore.com>

	* sysdep.c: remove include for nfsLib.h and an NFS specific error
	message for VxWorks 653 vThreads: not supported by the OS.

	* gsocket.h: disable sockets for VxWorks 653 vThreads.

2009-06-22  Robert Dewar  <dewar@adacore.com>

	* sem_ch6.adb: Add ??? comment for bad use of Style_Check

2009-06-22  Matthew Gingell  <gingell@adacore.com>
	    Arnaud Charlet  <charlet@adacore.com>

	* a-stzhas.adb, a-stwiha.adb, impunit.adb, a-swbwha.adb, a-shcain.adb,
	s-htable.adb, a-szuzha.adb, a-stunha.adb, a-stboha.adb, a-strhas.adb,
	g-spitbo.adb, s-strhas.adb, a-szbzha.adb, s-strhas.ads, Makefile.rtl,
	a-swuwha.adb: New unit System.String_Hash.  
	Refactor redundant cut and pasted hash functions with instances of a
	new generic hash function.
	Implement a new string hashing algorithm which appears in testing to
	be move effective than to previous approach.

	* gcc-interface/Make-lang.in: Update dependencies.

	* gcc-interface/Makefile.in: Reindent correctly vms targets.
	Fix setting of TOOLS_TARGET_PAIRS for bare board platforms.
	Disable socket support for Vxworks 653 vThreads.
	Improve handling of signals on darwin.
	(GNATMAKE_OBJS): Update dependencies.

From-SVN: r148789