Adds bztar format to generate .tar.bz2 tarballs

Uses the -f argument to overright old tarballs automatically, I am
assuming that if the old tarball was wanted it would have been moved or
else the version number would have been changed.

Uses the -9 argument to bzip2 and gzip to use maximum
compression. Compress uses the maximum compression by default.

Tests for correct value for the 'compress' argument of make_tarball. This
is one less place for someone adding new compression programs to forget to
change.

added 'abspath()' and 'extend()'.

exceptions better.

errors in the setup script or on the command line, so shouldn't result
in a traceback.

  'make_archive()' to a global static dictionary, ARCHIVE_FORMATS.
Added 'check_archive_formats()', which obviously makes good use of
  this dictionary.

and the other "composite meta-data" methods.

object, rather than through the distribution itself (since I moved the meta-
data out to a DistributionMetadata instance).

for all commands except 'prune' and 'graft'.

and now actually works.

to add the "display metadata" options: --name, --version, --author,
and so forth.  Main changes:
  * added 'display_options' class attribute to list all the "display only"
    options (--help-commands plus the metadata options)
  * added DistributionMetadata class as a place to put the actual
    metadata information from the setup script (not to be confused with
    the metadata display options); the logic dealing with metadata
    (eg. return self.name or "UNKNOWN") is now  in this class
  * changed 'parse_command_line()' to use the new OO interface provided
    by fancy_getopt, mainly so we can get at the original order of
    options on the command line, so we can print multiple lines of
    distribution meta-data in the order specified by the user
  * added 'handle_display_options()' to handle display-only options
Also fixed some crufty old comments/docstrings.

Added 'set_option_table()' method.
Added missing 'self' to 'get_option_order()'.
Cosmetic/comment/docstring tweaks.

leaving in its place a tiny wrapper around the FancyGetopt class
for backwards compatibility.

class.  (Mainly this was to support the ability to go back after the
getopt operation is done and get extra information about the parse,
in particular the original order of options seen on the command line.
But it's a big improvement and should make it a lot easier to add
functionality in the future.)

in the Makefile that start with "./" to be absolute paths (with the
implied root being the directory where the Makefile itself was found).

information from config.h.  Code is still there in case someone in the
future needs to parse an autoconf-generated config.h file.

Two small fixes to 'link_shared_object()'.

  - DistutilsOptionError is now documented as it's actually used, ie.
    to indicate bogus option values (usually user options, eg. from
    the command-line)
  - added DistutilsSetupError to indicate errors that definitely arise
    in the setup script
  - got rid of DistutilsValueError, and changed all usage of it to
    either DistutilsSetupError or ValueError as appropriate
  - simplified a bunch of option get/set methods in Command and
    Distribution classes -- just pass on AttributeError most of
    the time, rather than turning it into something else

with ":".

rather than cobbling them togethere here.

'native_path()'.

  than we actually use, and do actually use AR and SO.
Run ranlib on static libraries.  (Should probably have a platform-check
  so we don't run ranlib when it's not necessary, ie. on most modern
  Unices.)

on Unix either, so should probably disappear entirely.)

to account for it not being defined in the constructor.

  crashing when self.force not defined.
Revise 'copy_file()' and 'copy_tree()' docstrings accordingly.
Remove 'hasattr()' check for 'self.force' from 'make_file()'.

'get_python_lib()'.

timestamps), so every build_* command has 'self.force', which follows the
'build' command if not set by the user.

to all commands in the same way.  Several Command methods now either expect
'self.force' to be defined, or check if it is defined and assume it's
false if not.

Added code to include source files from 'build_clib' command to default file
  list -- currently this won't work, since 'build_clib' doesn't have a
  'get_source_files()' method!