* kjs/property_map.h: Add check() function.
        * kjs/property_map.cpp: Add the checking, controlled by DO_CONSISTENCY_CHECK.

	 - fixed UChar interface so it's not so slow in debug builds

        * kjs/ustring.h: Nothing in UChar needs to be private.

        * kjs/function.cpp: (GlobalFuncImp::call):
        * kjs/function_object.cpp: (FunctionObjectImp::construct):
        * kjs/identifier.cpp:
        * kjs/lexer.cpp: (Lexer::setCode), (Lexer::shift):
        * kjs/lookup.cpp: (keysMatch):
        * kjs/ustring.cpp: (UString::Rep::computeHash), (KJS::compare):
	Use the "uc" field instead of the "unicode()" inline function.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@2800 268f45cc-cd09-0410-ab3c-d52691b4dbfc