[PATCH] lib/bb/utils.py: Fix explode_dep_versions2() determinism issue

[Richard Purdie <richard.purdie@linuxfoundation.org>]

When we pass data into explode_dep_versions2(), we need to result to be
able to be processed in a deterministic way so that we end up with 
consistent hash values. This means we need an ordered structure rather
than an unordered one.

To do this, return an OrderedDict() rather than a dict(). 

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/bitbake/lib/bb/utils.py b/bitbake/lib/bb/utils.py
index 3544bbe..bf4ac40 100644
--- a/bitbake/lib/bb/utils.py
+++ b/bitbake/lib/bb/utils.py
@@ -34,6 +34,7 @@ import traceback
 import errno
 import signal
 import ast
+import collections
 from commands import getstatusoutput
 from contextlib import contextmanager
 from ctypes import cdll
@@ -188,7 +189,7 @@ def explode_dep_versions2(s):
     "DEPEND1 (optional version) DEPEND2 (optional version) ..."
     and return a dictionary of dependencies and versions.
     """
-    r = {}
+    r = collections.OrderedDict()
     l = s.replace(",", "").split()
     lastdep = None
     lastcmp = ""