patch applied (ghc): Handle deciding what docs to build better

[Ian Lynagh]

Thu May  7 17:06:03 PDT 2009  Ian Lynagh <igloo at earth.li>
  * Handle deciding what docs to build better
  Now we have variables for whether or not to build the docbook docs as
  HTML, as PS, and as PDF. The configure script output now matches what
  the build system will do (except it cannot take account of any
  mk/build.mk settings, of course).

    M ./aclocal.m4 -1 +14
    M ./configure.ac -10 +26
    A ./docs/users_guide/prof_scc.eps
    M ./docs/users_guide/profiling.xml -1 +1
    M ./mk/config.mk.in +4
    M ./rules/docbook.mk -3 +17

View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20090508000603-3fd76-60119df19fe8aeee6d27d78d0b53c9406d13d650.gz