Fixed typo in FAQ.

Add info on building docs on OS X
Merge pull request #7772 from jjh42/minor-doc-fix

Fixed typo in FAQ.
Fixes to build LLVM 3.3 on OS X 10.10
Merge branch 'master' of github.com:JuliaLang/julia
Update openlibm and openspecfun to the released versions for 0.3.
Go back to CLOCK_REALTIME in profiler