pull in jvm configuration options from ONE config file.

* Both windows + linux scripts use the same file.
* Because of batch limitations, we can only support JAVA_OPTS in config file.
Fix cygwin issues since user directory is not the normal windows one.
Fixes which leverage @havocp's sanity
Removing config autocreation from linux/mac/cygwin
Merge pull request #25 from typesafehub/wip/user-config-in-friendly-spot

Allow user-level activator configuration