Issue#26 switched extract from unzip to jar xvf

[mrswadge]

Apologies, a new pull request on Issue#26 branch to separate the pull request from Issue#28.

https://github.com/oracle/fmw-chef-cookbook/issues/26

The jar xvf command is able to support long filenames in windows and therefore can be used to solve the issues present with unzip.exe. A further advantage of this change is it simplifies the scripts as the indirection between weblogic versions in deriving the path to unzip.exe as it is no longer required.

Signed-off-by: Stuart Stephen [email protected]