New Release around zip(BLOB,..) and checksum

JDBMS_COMPRESS : Added function that zips up to 10 BLOBS into a new BLOB. Have a look at test_JDBMS_COMPRESS.sql for more details.

Completed the magic file with application/msoutlook mime type. Now Outlook messages will be recognized

Changed JDBMS_CHECKSUM.get_CRC32(BLOB) beahviour : now JDBMS_CHECKSUM.get_CRC32(EMPTY_BLOB()) (same on a NULL types BLOB parameter) returns NULL instead of throwing an Exception (behaviour asked by developer as it finally makes more sense to get a null CRC than making a try/catch in client code).

For each new release, since now, will add the method to patch oracle-jutils within a minimal number of steps (script is as generic as possible so you should be able to patch easily on linux, windows and other 'nix OS).