Updated Java download parameters

Oracle has updated its download policy for the JDK.  In order to download jdk6, the follow adjustments were made:
* Updated download URL to save redirect and SSL certificate warning
* Add another Cookie to the Header, 'oraclelicense'

TODO:
A quick check on jdk7 download was unsuccessful: the user must authenticate against OTN in order to download the binary
Restored parameterized platform value in jdk6 download link
Merge pull request #13 from modestymaster/master

Updated Java download parameters for jdk6