Squashed 'library/zf2-di/' changes from e6a0f3b..7bbfef9
Squashed 'library/zf2-di/' changes from e6a0f3b..7bbfef9

7bbfef9 [zf2.di] If single argument is null, don't pass it to constructor

git-subtree-dir: library/zf2-di
git-subtree-split: 7bbfef9ac014ddd9a2f6f269b7938b5fb83eda1e

vrkansagara/mwop.net,weierophinney/mwop.net,vrkansagara/mwop.net,weierophinney/mwop.net,vrkansagara/mwop.net,weierophinney/mwop.net,vrkansagara/mwop.net,weierophinney/mwop.net