bitbake: lib/bb/utils.py: return sorted OrderedDict in explode_dep_versions2

The OrderedDict's item is sorted by insertion order, there might be a
problem when build the same recipe again, for example:
- First build of acl:
  Depends: libattr1 (>= 2.4.47), libc6 (>= 2.24)
- Second build of acl:
  Depends: libc6 (>= 2.24), libattr1 (>= 2.4.47)

They are exactly the same depends, but tools like "diff" doesn't think
so. Return sorted OrderedDict will fix the problem.

(Bitbake rev: a392f19f16ef8202ce3c12afbeb186a02438da17)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/utils.py

@@ -250,6 +250,7 @@ def explode_dep_versions2(s):
         if not (i in r and r[i]):
             r[lastdep] = []
 
+    r = collections.OrderedDict(sorted(r.items(), key=lambda x: x[0]))
     return r
 
 def explode_dep_versions(s):