[commit: ghc] ghc-7.4's head updated: Tweaks to safe haskell documentation. (602545a)

[Ian Lynagh]

Repository : ssh://darcs.haskell.org//srv/darcs/ghc

Branch 'ghc-7.4' now includes:

     dba7254... Enable pthread_getspecific() tls for LLVM compiler
     6247b59... Add autoconf support to detect an LLVM-based C compiler
     5d55dfe... Turn on LLVM backend if 'keep-llvm-files' flag specified.
     d6c2ffd... Improve documentation on backends
     0c9427c... Add doc for -msse4.2 flag.
     8e6990a... vectoriser: fix pvoids problem when vectorising enumerations
     b4036c3... Update Safe Haskell documentation for new design in 7.4
     34053bb... Merge /Users/benl/devel/ghc/ghc-head-devel
     f963d26... Don't add the -x flag to ld when joining object files
     841496c... Do not wrap Coercions with ticks (fixes GADT3(profasm))
     a5762b7... fix warning
     d681f87... merge
     ed04377... uType_defer: only call mkErrInfo if -ddump-tc-trace is on (#5631)
     602545a... Tweaks to safe haskell documentation.