[PATCH] Build Thunderbird 13 with Clang

[Jung-uk Kim]

I was annoyed by GCC46 dependency, so I fixed TB13 build with Clang. :-)

http://people.freebsd.org/~jkim/thunderbird13-clang.diff

patch-bugzilla-711895
- Port of Bug 711895 to Thunderbird.
https://bugzilla.mozilla.org/show_bug.cgi?id=711895
http://hg.mozilla.org/mozilla-central/rev/f64f62213f61

patch-bugzilla-724700
- Upstream patch for Bug 724700.
https://bugzilla.mozilla.org/show_bug.cgi?id=724700
http://hg.mozilla.org/comm-central/rev/a292638503b6

patch-bugzilla-734080
- Upstream patch for Bug 734080.
https://bugzilla.mozilla.org/show_bug.cgi?id=734080
http://hg.mozilla.org/comm-central/rev/247aa759c1ce
http://hg.mozilla.org/comm-central/rev/134579274546

patch-configure.in
- Remove unnecessary hunks and reduce patch size.
- (Minimal) Port of Bug 727145 to Thunderbird.
https://bugzilla.mozilla.org/show_bug.cgi?id=727145
https://hg.mozilla.org/mozilla-central/rev/2046a1f46d40

patch-mailnews-addrbook-src-nsDirPrefs.cpp
patch-mailnews-compose-src-nsSmtpProtocol.cpp
- Work around "case value evaluates to N, which cannot be narrowed to
type foo" errors.

Cheers,

Jung-uk Kim