Avoid redefinition of global static debug flag and remove unneeded
#import "GTMDefines.h

Patch by Alistair Tse <altse@chromium.org>

Review URL: https://breakpad.appspot.com/824002


git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1244 4c0a9323-5329-0410-9bdc-e9ce6186880e
Add include guards and avoid redefinition of false/true in convert_UTF.

Patch by Alistair Tse <altse@chromium.org>

Review URL: https://breakpad.appspot.com/834002


git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1245 4c0a9323-5329-0410-9bdc-e9ce6186880e