[POC ]remove any code that depends on plexus-utils from select plugin paths th...

...at cause problems in IDEA. Almost all cases are a drop in replacement for apache commons functions

The only function here that might not behave identically is FileUtils.deleteDirectory(), as far as I can tell.

This solves a problem where IDEA doesn't import nexus-oss in a way suitable for immediate compilation. Replacing the utility functions with apache commons equivalents removes any problems.