enhanced the java_class compiler so it can handle multiple constructors
use right JODA method to calculate Julian day number
Revert "use right JODA method to calculate Julian day number"

This reverts commit 3cc0feebe9fb87ad5222942c9f463fe89592b8b6.
Merge pull request #1762 from jkutner/add_default_constuctor

enhanced the java_class compiler so it can handle multiple constructors
Merge with jruby-1_7