[Php] bugfix: uppercase haxe keywords crash PHP so we have to list all keywords

git-svn-id: http://haxe.googlecode.com/svn/trunk@6702 f16182fa-f095-11de-8f43-4547254af6c6
minor

git-svn-id: http://haxe.googlecode.com/svn/trunk@6703 f16182fa-f095-11de-8f43-4547254af6c6
new default path

git-svn-id: http://haxe.googlecode.com/svn/trunk@6704 f16182fa-f095-11de-8f43-4547254af6c6
[cpp] Keep separate key map to ensure that references are held.  Fix toString

git-svn-id: http://haxe.googlecode.com/svn/trunk@6707 f16182fa-f095-11de-8f43-4547254af6c6