settings.xml support

[Matthew Ouyang]

I have my own settings.xml but in order to incorporate it, I need to run the build twice. The desired settings.xml should be configurable in mvnvm.properties so that I only have run the build once.

Current Steps to Add a settings.xml

1. run 'mvn', and allow it to fail
2. copy my settings.xml into the appropriate conf dir
3. run 'mvn' again, and the build succeeds

[Matthew Ouyang]

Closing this as "Won't Fix" after some thought. I forgot that the settings can also be grabbed from a user's local repository - this is better-suited solution for the issue that I described.