Stage 1 repair and cleanup found while bootstrapping ppcle64
    
       Author: Aldy Hernandez <aldyh@redhat.com>
       Date:   Wed Jul 9 17:34:57 2014 -0700
    
        Here are changes to the main bootstrap scripts to make them (somewhat)
        target independent.  There are various changes herein but they can be
        summarized as follows:
    
        1. Misc cleanups
    
        2. Automatic fixing of config.{guess,sub} while configuring packages.
    
        3. Added documentation to the overall scripts (in file stage1) as well
        as miscellaneous documentation sprinkled throughout.
    
        4. Changes to script2makefile to use double underscore protected
        identifiers that will not conflict with recursive Makefiles that may
        use SCRIPTDIR, FRAGDIR, or RCFILE identifiers.
    
        5. Lots of re-arching of the stage1 script so TARGET can be something
        other than aarch64-redhat-linux-gnu.
    
        6. Reordering changes in "stage1" to work with more recent package
        sources (for instance, ppl and cloog are no longer needed as separate
        packages, some packages need various configury magic, etc).
    
    Signed-off-by: Aldy Hernandez <aldyh@redhat.com>