make boost aware that clang is not gcc 4.2
update NEWS file
fix link in news
Update NEWS.rst
added line break at end of file
Merge pull request #11 from steinwurf/fix-clang-behaving-as-gcc-4-2

make boost aware that clang is not gcc 4.2
Preparing to create tag 1.5.1
remove warnings from clang patch
Merge pull request #12 from steinwurf/remove-warnings-from-clang-patched-code

remove warnings from clang patch
Merge branch 'master' into upgrade-to-1.56

Conflicts:
	boost/config/stdlib/libstdcpp3.hpp
	wscript