- update to ghc-6.12.1-pre
    - separate bcond options into enabled and disabled for clarity
    - only enable shared for intel x86 archs (Lorenzo Villani)
    - add quick build profile (Lorenzo Villani)
    - remove package_debugging hack (use "make install-short")
    - drop sed BR (Lorenzo Villani)
    - put all build.mk config into one cat block (Lorenzo Villani)
    - export CFLAGS to configure (Lorenzo Villani)
    - add dynamic linking test to check section (thanks Lorenzo Villani)
    - remove old ghc66 obsoletes
    - subpackage huge ghc internals library (thanks Lorenzo Villani)
    - BR ghc-rpm-macros >= 0.3.0
    - move html docs to docdir/ghc from html subdir (Lorenzo Villani)