Improved performance of garbage collection by moving the function that updates pointers during compacting collection into the updating visitor.  This gives the compiler a better chance to inline and avoid a function call per (potential) pointer.

Extended the shell sample with a --runtime-flags option.

Added Visual Studio project files for the shell.cc and process.cc samples.



git-svn-id: http://v8.googlecode.com/svn/trunk@14 ce2b1a6d-e550-0410-aec6-3dcde31c8c00