[PATCH] make arm-use-movt and arm-reserve-r9 options available for all arm

[Jeroen Hofstee]

Hello,

As discussed in [1] and [2] the flag, preventing movt /
movw instructions and having a platform specific r9 is also
useful outside of IOS. It is separated in two patches since
the movt relies on an change in clang [3] and the r9 one
is trivial.

I don't have commit privileges, so it would be nice
if someone can pick this up (preferably close before the clang
change). The r9 change is supposed to go first. It would be nice
if the movt patch is close before the clang patch, to prevent
warnings / errors)

Regards,
Jeroen

[1] 
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20130805/183980.html
[2] 
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20130812/184064.html
[3] 
http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20130812/086064.html
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