- compile most of JavaScriptCore as one file for 4% JS iBench speed improvement 

        * JavaScriptCore.xcodeproj/project.pbxproj: Add AllInOneFile.cpp, and remove files it includes
        from the build.
        * kjs/AllInOneFile.cpp: Added.
        * kjs/dtoa.cpp: Renamed CONST to CONST_ to avoid conflict.
        (Bigint::):
        (Bigint::nrv_alloc):
        * kjs/lookup.cpp: Use "namspace KJS { ... }" instead of "using namespace KJS;" 



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@21064 268f45cc-cd09-0410-ab3c-d52691b4dbfc