remove debugging code
resolve github issue #4

this teaches fakeprovide about the -P <provides> option, which can be
used to specify arbitrary arguments for the `Provide:` keyword in the
spec file.

For example:

    $ fakeprovide -P 'libfdk-aac.so.0()(64bit)' extralibs
    Building binary RPM.
    -rw-rw-r--. 1 lkellogg lkellogg 2372 Dec 23 15:56 fakeprovide-extralibs-20131223155626-1.fc19.noarch.rpm

And looking at the result:

    $ rpm -qp --provides fakeprovide-extralibs-20131223155626-1.fc19.noarch.rpm
    extralibs
    fakeprovide-extralibs = 20131223155626-1.fc19
    libfdk-aac.so.0()(64bit)