METRICS-3266: Upgrade Maven compiler plugin to 3.0
METRICS-3270: Upgrade maven clean plugin to 2.5
METRICS-3267: Upgrade maven dependency plugin to 2.6
METRICS-3269: Upgrade maven assembly plugin to 2.4
METRICS-3268: Upgrade maven install plugin to 2.4
METRICS-3272: Upgrade maven resources plugin to 2.6
METRICS-3274: Upgrade maven antrun plugin to 1.7
METRICS-3273: Upgrade maven shade plugin to 2.0
Revert "METRICS-3266: Upgrade Maven compiler plugin to 3.0"

This reverts commit 6b3b40b05bcd2c0c62e2de68aa7b60c48ca1f3c4.

* See http://jira.codehaus.org/browse/MCOMPILER-187
METRICS-2686(related): Removed unused 'aspectj.maven.version' definition