Compiler will now give error if there is an overflow when evaluating power-of in constant expression


git-svn-id: http://svn.code.sf.net/p/angelscript/code/trunk/sdk@2028 404ce1b2-830e-0410-a2e2-b09542c77caf
The script array and grid add-ons avoid flagging themselves as garbage collected for handle subtypes that are known not to be garbage collected

git-svn-id: http://svn.code.sf.net/p/angelscript/code/trunk/sdk@2029 404ce1b2-830e-0410-a2e2-b09542c77caf