This patch give ability for Options instances to support set objects
as values.
It define __eq__ to avoid calling the fallback method defined in UserDict upper class
ie: UserDict.__cmp__
(cherry picked from commit 4ca599db4e4dfe7f830747dce89d066a0d5d468f)
Signed-off-by: Cédric de Saint Martin <cedric.dsm@tiolive.com>

Conflicts:
	CHANGES.SlapOS.txt
	setup.py

Make Options.copy return de-serialised values.
Make _save_option accept non-string values.

Useful when recipes generate non-string values to be reused by other
recipes.

Useful when recipes generate non-string values to be reused by other
recipes.

Conflicts:
	src/zc/buildout/tests.py

ref https://bugs.launchpad.net/zc.buildout/+bug/144228 .

This reverts commit dcea4db0.

Revert "incase of symlink, we should just delete it instead of calling os.chmod that tries to chmod the original that can raise 'Operation not permitted' error."

This reverts commit 2c2b8c43.

This reverts commit 0e9cb89e.

incase of symlink, we should just delete it instead of calling os.chmod that tries to chmod the original that can raise 'Operation not permitted' error.

Not sure what 1.5 is doing differently, I couldn't find the difference
reading the code but both profiling and timing data show that this
isn't an issue under 1.5/trunk, just under 1.4 into which this change
has already been merged.

git-svn-id: http://svn.zope.org/repos/main/zc.buildout/trunk@124125 62d5b8a3-27da-0310-9561-8e5933582275

This reverts commit f18c3b61.

When profiling a simple buildout with 10 parts with identical and
large working sets, this resulted in a decrease of run time from
93.411 to 15.068 seconds, about a 6 fold improvement.  To see the
benefit be sure to run without any increase in verbosity ("-v"
option).

git-svn-id: http://svn.zope.org/repos/main/zc.buildout/trunk@124059 62d5b8a3-27da-0310-9561-8e5933582275