Default platform-specific build directory changed to 'build/platlib'.

Changed those two methods to only compile/link if necessary (according
  to simplistic timestamp checks).
Added 'output_dir' to 'object_filenames()' and 'shared_object_filename()'.

Terminology change in 'newer()'.
Made 'copy_tree' respect dry_run flag a little better.
Added 'move_file()'.

  signatures, and updated some docstrings to reflect it.
Some comments added.
Added 'announce()' and 'move_file()' methods.

Error message tweak in Command.set_option().
Added Command.get_peer_option().
Added Command.move_file() wrapper.

we no longer explicitly pull distribution options out of our Distribution
object, but rather let the Distribution put them into the command object.

  attributes, etc.  Biggest change was to the Distribution constructor
  -- it now looks for an 'options' attribute, which contains values
  (options) that are explicitly farmed out to the commands.  Also,
  certain options supplied to Distribution (ie. in the 'setup()' call in
  setup.py) are now "command option aliases", meaning they are dropped
  right into a certain command rather than being distribution options.
  This is handled by a new Distribution class attribute,
  'alias_options'.
Various comment changes to reflect the new way-of-thinking.
Added 'get_command_name()' method to Command -- was assuming its
  existence all along as 'command_name()', so changed the code that
  needs it to call 'get_command_name()'.

Ditched redundant '_gen_preprocess_options()' and '_gen_lib_options()'
  -- now provided by ccompiler.py.
Fixed some filename extension variables -- added missing period.
Cosmetic tweaks.

  now provided (minus the leading underscore) by the ccompiler module.
Fix 'compile()' to return the list of object files generated.
Cosmetic tweaks/delete cruft.

Added big comment about the kludginess of passing 'build_options'
  to the link methods and how to fix it.
Added 'gen_preprocess_options()' and 'gen_lib_options()' convenience
  functions -- the two cases are very similar for Unix C Compilers and
  VC++, so I figured I might as well unify the implementations.

Apparently os.name is "nt" or "posix" or we don't care.
Cosmetic tweaks.

for MSVCCompiler.

  - fix some broken abstract methods
  - kludge: add 'build_info' parameter to link methods
  - add 'object_name()' and 'shared_library_name()'
  - support for MSVCCompiler class on NT/Win95

Initial revision only includes support for POSIX-style fork-and-exec.

Added 'verbose' and 'dry_run' parameters to constructor.
Changed 'compile()', 'link_*()' to default lists arguments to None
  rather than empty list.
Added implementations of the filename-mangling methods mandated by
  the CCompiler interface.

  'new_compiler()' factory function.
Added 'runtime_library_dirs' list (for -R linker option) and methods
  to manipulate it.
Deleted some obsolete comments.
Added all the filename manglign methods: 'object_filenames()',
  'shared_object_filename()', 'library_filename()',
  'shared_library_filename()'.
Added 'spawn()' method (front end to the "real" spawn).

Better error messages for bad entries in option table.

  - did away with 'comment_re' option -- it's just not that simple anymore
  - heavily revised the main logic in 'readline()' to accomodate this
Beefed up 'warn()': 'line' can be list or tuple, and 'msg' is
  automatically converted to a string.

module distributions that contain platform-specific files.

Added DistutilsPlatformError.

'chmod()' in 'copy_file()'.

'install_site_lib' and install_site_platlib' on non-POSIX platforms.
Should at least work for NT, as this is adopted from Amos Latteier's NT
patches.  Also added extensive comments bitching about the inadequacy of
the current model, both under POSIX and NT (and probably other) systems.

  'run_command()' to refer to it before attempting to run a command --
  that way, command classes can freely invoke other commands without fear
  of duplicate execution.
Beefed up some comments and docstrings.

Amos Latteier <amos@aracnet.com>).

meaningful return values: respectively, whether the copy was done, and
the list of files that were copied.  This meant some trivial changes in
core.py as well: the Command methods that mirror 'copy_file()' and
'copy_tree()' have to pass on their return values.

of the 'install_py' command rather than 'build_py'.  Obviously, this
meant that the 'build_py' and 'install_py' modules had to change; less
obviously, so did 'install' and 'build', since these higher-level
commands must make options available to control the lower-level
commands, and some compilation-related options had to migrate with the
code.