Added histograms for total allocated/live heap size, as well as allocated size and percentage of total for map and cell space.

Fixed parseInt's octal parsing behavior (ECMA-262 Annex E 15.1.2.2). (issue 1645)

Added checks for interceptors to negative lookup code in Crankshaft. (Chromium issue 140473)

Made incremental marking clear ICs and type feedback cells.

Performance and stability improvements on all platforms.

git-svn-id: https://v8.googlecode.com/svn/trunk@12295 ce2b1a6d-e550-0410-aec6-3dcde31c8c00