Version Tag Regular Expression Problem(s).

[jhe-software-researcher]

There are a few version tag-related RE matching problems in current java code:

1. When loading the version map for RecovAr, it won't recognize non-conventional versions.
2. The version tag RE is hard-coded in the ../src/main/java/edu/usc/softarch/arcade/util/Version.java. Everytime when there is some version tags that do not follow that convention, we have to change the code to make it work.