enable pacman pkg module for Arch ARM
Merge pull request #4581 from mfussenegger/arch-arm

enable pacman pkg module for Arch ARM
move the aes key location so that the correct NEW key is sent

Fix #4562
Fix version
Merge pull request #4583 from UtahDave/win_pkg_info

Fix pkg.version on Windows.
Modified nginx module

Append nginx.configtest to check configuration, modified signal to support
nginx start
Merge pull request #4584 from pengyao/develop

Modified nginx module
Add libzmq version to --versions-report output.
Clean up 'salt --versions-report' after patch from s0undt3ch (thanks!).
Merge pull request #4585 from kinware/develop

Add libzmq version to --versions-report output.
Provide the necessary code changes to support #4587. Again, sorry @kinware for my rudeness.