Debugger: refactor reloc info.

Debugger: refactor reloc info.

- split relocation info for debug break slots for
  - calls (with call arguments count as data)
  - construct calls
  - normal slots
- renamed DEBUG_BREAK into DEBUGGER_STATEMENT
- removed unused IC state for Debug stubs

R=ulan@chromium.org
BUG=v8:4269
LOG=N

Committed: https://crrev.com/198c75f6cd3b7641ae422dacf837049f95c37e2f
Cr-Commit-Position: refs/heads/master@{#29603}

[Yang, 2015-07-13 09:38:37]

The CQ bit was checked by yangguo@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-07-13 09:38:46]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1232803002/1

[commit-bot: I haz the power, 2015-07-13 09:47:31]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-07-13 09:47:32]

Dry run: Try jobs failed on following builders:
  v8_linux_mipsel_compile_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_mipsel_compile_rel...)

[ulan, 2015-07-13 10:50:07]

lgtm if mips is fixed.

[Yang, 2015-07-13 11:28:29]

The CQ bit was checked by yangguo@chromium.org

[Yang, 2015-07-13 11:28:29]

The patchset sent to the CQ was uploaded after l-g-t-m from ulan@chromium.org
Link to the patchset: https://codereview.chromium.org/1232803002/#ps20001
(title: "fix mips")

[commit-bot: I haz the power, 2015-07-13 11:28:42]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1232803002/20001

[commit-bot: I haz the power, 2015-07-13 12:32:13]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-07-13 12:32:35]

Patchset 2 (id:??) landed as
https://crrev.com/198c75f6cd3b7641ae422dacf837049f95c37e2f
Cr-Commit-Position: refs/heads/master@{#29603}