Log message:
No need to have two variables for the same logic.
Replace PYTHON_PATCH_SCRIPTS with REPLACE_PYTHON.

Log message:
Mark packages as not ready for python-3.x where applicable;
either because they themselves are not ready or because a
dependency isn't. This is annotated by
PYTHON_VERSIONS_INCOMPATIBLE=  33 # not yet ported as of x.y.z
or
PYTHON_VERSIONS_INCOMPATIBLE=  33 # py-foo, py-bar
respectively, please use the same style for other packages,
and check during updates.

Use versioned_dependencies.mk where applicable.
Use REPLACE_PYTHON instead of handcoded alternatives, where applicable.
Reorder Makefile sections into standard order, where applicable.

Remove PYTHON_VERSIONS_INCLUDE_3X lines since that will be default
with the next commit.

Whitespace cleanups and other nits corrected, where necessary.

Log message:
Bump PKGREVISION of all packages which create users, to pick up change of
sysutils/user_* packages.

Log message:
Drop PKG_DESTDIR_SUPPORT setting, "user-destdir" is default these days.

Log message:
Bump PKGREVISION from default python to 2.7.

Log message:
Bump revision for PYTHON_VERSION_DEFAULT change.

Log message:
DESTDIR support

Log message:
Provide PY_COMPILE_ALL and PY_COMPILE_O_ALL to compile all Python
sources in a directory (tree) in pversion.mk. Adjust the various places
that called it locally.

Log message:
Remove @dirrm entries from PLISTs

Log message:
Switch to Python 2.5 as default. Bump revision of all packages that have
changed runtime dependencies now.