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

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=

[chunyang.dai, 2014-09-24 08:20:00]

chunyang.dai@intel.com changed reviewers:
+ svenpanne@chromium.org, weiliang.lin@intel.com

[chunyang.dai, 2014-09-24 08:20:14]

weiliang
PLTAL.
thanks

[Weiliang, 2014-09-24 08:32:33]

lgtm

[Weiliang, 2014-09-24 08:35:15]

Committed as r24169

[Sven Panne, 2014-09-24 11:04:43]

On 2014/09/24 08:35:15, Weiliang wrote:
> Committed as r24169

Hmmm, how do you actually commit? The CLs from you are not closed automatically.
"git cl dcommit" would do it...

[Weiliang, 2014-09-24 15:23:24]

On 2014/09/24 11:04:43, Sven Panne wrote:
> On 2014/09/24 08:35:15, Weiliang wrote:
> > Committed as r24169
> 
> Hmmm, how do you actually commit? The CLs from you are not closed
automatically.
> "git cl dcommit" would do it...

Hi Sven, 
Yes, I did it by "git cl dcommit". 
It is a known issue. The x87 CLs reviewed by me are not closed automatically may
be because my account is not "@chromium.com" and unable to close the CLs
automatically which are not created by myself. 

Thanks
-Weiliang