[apparmor] Minimum versions of tools

[Seth Arnold]

Steve pointed out that I should document the Perl 5.10.1 minimum version
dependency introduced by Kshitij's de-dup patch. I took the opportunity
to broadly sketch our dependencies in our top-level README.

Thoughts?

Thanks

Signed-off-by: Seth Arnold <seth.arnold at canonical.com>


=== modified file 'README'
--- README	2012-11-06 01:27:20 +0000
+++ README	2013-07-05 22:13:04 +0000
@@ -198,3 +198,21 @@
 
 TODO
 
+
+-----------------
+Required versions
+-----------------
+
+The AppArmor userspace utilities are written with some assumptions about
+installed and available versions of other tools. This is a (possibly
+incomplete) list of known version dependencies:
+
+AppArmor.pm (used by aa-audit, aa-autodep, aa-complain, aa-disable,
+aa-enforce, aa-genprof, aa-logprof, aa-unconfined) requires minimum
+Perl 5.10.1.
+
+Python scripts require minimum Python 2.7. Some utilities may require
+Python 3.3. Python 3.0, 3.1, 3.2 are largely untested.
+
+Most shell scripts are written for POSIX-compatible sh. aa-decode expects
+bash, probably version 3.2 and higher.

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