Fixed Chromium issues: 115100, 129628, 131994, 132727, 132741, 132742, 133211

Fixed V8 issues: 915, 1914, 2034, 2087, 2094, 2134, 2156, 2166, 2172, 2177, 2179, 2185

Added --extra-code flag to mksnapshot to load JS code into the VM before creating the snapshot.

Support 'restart call frame' command in the debugger.

Performance and stability improvements on all platforms.

git-svn-id: http://v8.googlecode.com/svn/trunk@11882 ce2b1a6d-e550-0410-aec6-3dcde31c8c00