Do not read CFI section when not outputing CFI information.

This revert revision 1182 and fix setting the module load address
whether CFI information is needed or not.

R=mark@chromium.org

Review URL: https://breakpad.appspot.com/641002

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1243 4c0a9323-5329-0410-9bdc-e9ce6186880e