implement readonly attribute boolean isLoggedIn
Have GetIsLoggedIn always return TRUE as per https://bugzilla.mozilla.org/show_bug.cgi?id=839961#c40
conditional compile only if GetIsLoggedIn is defined
move all this conditional-compilation crap to another file
Merge branch 'master' into fedora
Fedora: Rebuild for Firefox 23

- Rebuild for Firefox 23
- Fix build on some non-x86_64 platforms