Revert of Decompiler improvements.

Revert of Decompiler improvements. (patchset #2 id:20001 of https://codereview.chromium.org/1177123002/)

Reason for revert:
Code printout has become unreadable. Offsets are printed in decimal numbers everywhere else. This is inconsistent with the rest of the code-base. Some examples are tables for deoptimization data, safepoints and exception handlers. I would be fine with this change if _all_ tracing would be adapted. But there are _many_ places to touch.

Original issue's description:
> Decompiler improvements.
>
> The main motivation is simplifying profiling activities:
>
> 1) Use hex instead of decimal for offsets, just like perf does. This
> affects --print-opt-code
>
> 2) When printing block information, indicate loop information: if
> block is header, where the end is; if block is in a loop, where the
> loop starts. This affects --code-comments.
>
> Using --print-opt-code --code-comments, and cross-referencing with data
> obtained from perf, one may now find the block a hotspot belongs to
> without needing to do hex2dec/dec2hex conversions. Once found, loop info
> is available locally, on the block.
>
> BUG=
>
> Committed: https://crrev.com/32f4bd659d38eb5485eedb1d0dd236ff1bdc01d5
> Cr-Commit-Position: refs/heads/master@{#28964}

TBR=jarin@chromium.org,stichnot@chromium.org,jvoung@chromium.org,mtrofin@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Committed: https://crrev.com/e2ce4681655a610631e6a6e17dec62e6c4bdef43
Cr-Commit-Position: refs/heads/master@{#29046}

[Michael Starzinger, 2015-06-16 10:36:43]

Created Revert of Decompiler improvements.

[Michael Starzinger, 2015-06-16 10:37:03]

mstarzinger@chromium.org changed reviewers:
+ bmeurer@chromium.org

[Benedikt Meurer, 2015-06-16 10:37:44]

LGTM.

[Jarin, 2015-06-16 10:37:59]

lgtm

[Michael Starzinger, 2015-06-16 10:38:29]

The CQ bit was checked by mstarzinger@chromium.org

[commit-bot: I haz the power, 2015-06-16 10:38:40]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1188093002/1

[commit-bot: I haz the power, 2015-06-16 10:38:52]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-06-16 10:39:15]

Patchset 1 (id:??) landed as
https://crrev.com/e2ce4681655a610631e6a6e17dec62e6c4bdef43
Cr-Commit-Position: refs/heads/master@{#29046}