Fix Windows client compilation on mingw.
A=Jacek Caban <jacek@codeweavers.com>, R=ted at http://breakpad.appspot.com/548002/

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1399 4c0a9323-5329-0410-9bdc-e9ce6186880e
Read dynamic symbols table even if binary contains debug info
A=Wander Lairson Costa <wcosta@mozilla.com>. R=ted at https://breakpad.appspot.com/9684002/

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1400 4c0a9323-5329-0410-9bdc-e9ce6186880e