Back out 77cbaaba1f0d / bug 881368 part 2 due to Linux and Windows debug bustage. a=Standard8 for CLOSED TREE
Bug 789787 - Part 1. Build config change (Add --disable-mapi for non-Outlook header). r=Standard8. a=Standard8 for CLOSED TREE
Bug 789787 - Part 2. Make mailnews be able to build if --disable-mapi is specified and there's no mapi header. r=Standard8. a=Standard8 for CLOSED TREE