Add scripts for using cygprofile to repository

Add scripts for using cygprofile to repository

These scripts, which are used to create a link order file for Linux based
builds (Linux, Android, ChromeOS). This commit simply moves them from a
Google private web page where they have lived for the last couple of years.

The scripts are:
mergetraces.py - merge multiple cygprofile traces into a single trace
symbolise.py - convert traces into an order file with symbols
patch_orderfile.py - complete the order file with symbols from Chrome.

I will seperately add a page on creating an order file to the Chromium
web site.

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=203143

[digit, 2013-05-30 11:25:40]

lgtm :)

[commit-bot: I haz the power, 2013-05-30 11:27:07]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/aberent@chromium.org/16151006/1

[commit-bot: I haz the power, 2013-05-30 11:37:16]

Retried try job too often on chromium_presubmit for step(s) presubmit
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=chromium_p...

[commit-bot: I haz the power, 2013-05-30 11:53:36]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/aberent@chromium.org/16151006/8001

[commit-bot: I haz the power, 2013-05-30 14:51:57]

Change committed as 203143