Add default_checks.xml based on sun_checks.xml to be used as the default checkstyle rules for the base-pom
Disable checkstyle rule that checks that each Java package has a Javadoc file used for commenting.
Disable checkstyle rule that checks for Javadoc comments.
Modify checkstyle rule that checks for Size Violations.

- Change LineLength from default to 120
- Change MethodLength to only evaluate methods and not ctors, also set
  line length to 150 not counting whitespace and single line comments
Disable checkstyle rule that checks for checks for the common coding problem of AvoidInlineConditionals