config: define BOOST_NO_UNICODE_LITERALS for all gcc versions - their C++0x web page was wrong; there is no support yet. Also correct test code.

[SVN r56716]

test/all/Jamfile.v2

@@ -1,7 +1,7 @@
 #
 # Regression test Jamfile for boost configuration setup.
 # *** DO NOT EDIT THIS FILE BY HAND ***
-# This file was automatically generated on Sun Aug 02 08:26:00 2009
+# This file was automatically generated on Sun Oct 11 13:04:18 2009
 #  by libs/config/tools/generate.cpp
 # Copyright John Maddock.
 # Use, modification and distribution are subject to the