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

It wasn't related to openssl.

This fix was already done by Roman. But the escape_data dict cache was
posing problem in specific complex case. (Notably in
collective.recipe.template tests).
To keep the last fix, we would have to change every method of Options
class.

This fix does not use escape_data dict cache. This way, it allow
a simple working fix with minimal impact. Not breaking backward
compatibility.

This reverts commit ef1a217bbb2b0abd21a630e6154ff8dc5e968caa.

Squashed commit of the following:

commit ef1a217bbb2b0abd21a630e6154ff8dc5e968caa
Author: Romain Courteaud <romain@nexedi.com>
Date:   Tue Oct 11 10:01:10 2011 +0200

    Escape $$ character to $.

    Do not escape when fetching dependency values.

commit 8232c9aa4e4906f67e0b6ca5fd8a9f09d05f315f
Author: Antoine Catton <acatton@tiolive.com>
Date:   Mon Oct 10 09:57:12 2011 +0200

    Add tests for dollar sign escaping

Avoid unnecessary conflicts during merges.

git-svn-id: http://svn.zope.org/repos/main/zc.buildout/trunk@123007 62d5b8a3-27da-0310-9561-8e5933582275