Add default_checks.xml based on sun_checks.xml

- This will be the default checkstyle rules used by the oss-parent pom
Disable JavadocPackage checkstyle rule

- Do not check that each Java package has a Javadoc file used for
  commenting (e.g. package-info.java)
Disable all checkstyle rules that checks for Javadoc comments
Modify checkstyle rule that checks for Size Violations.

- Change LineLength from default to 130
- Change MethodLength to only evaluate methods and not ctors, also set
  nbr of lines to 150 not counting whitespace and single line comments
Disable AvoidInlineConditionals checkstyle rule

- Allow the use of inline conditionals
  e.g. (a==null || a.length<1) ? null : a.substring(1);
Modify HiddenField checkstyle rule

- Ignore checking constructor parameters for hidden fields
- Ignore checking the parameters of a property setter method
Modify MagicNumber checkstyle rule

- Adds a set of numbers that are not considered to be *that* magic
  (taken from maven_checks.xml)
Disable TodoComment checkstyle rule

- Do not report TODO comments as a violation
  e.g. TODO: Need to document this method.