X87: Made the detailed reason for deopts mandatory on x87. Unified and improved things.

port r24146.

original commit message:
   Made the detailed reason for deopts mandatory on ia32. Unified and improved things.

   The number of different detail strings has been reduced a bit without
   any loss of information. Furthermore, DoubleToI is a bit more
   informative now. Tiny reason fixes.

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/597003003

Patch from Chunyang Dai <chunyang.dai@intel.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24169 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Simplify stack trace getter wrt prototype chain walk.

R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/595253002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24170 ce2b1a6d-e550-0410-aec6-3dcde31c8c00