Update to bcprov-jdk16 v1.46

Hi,

I think that we should update to Bouncycastle 1.46. As you can see, this update has no impact in the source code.

Updating has some advantages:
* Use a version which already corrected many bugs compared to the actual version
* I will be able to send you another pull request which will:
    - Solve JGLOBUS-95 (c.f: X509Credential.java): We must use as much as possible the BC functionality and not recode them.
    - Huge code cleanup: remove dead code, cleanup imports etc...
    - Ease the next potential BC updates

Best,
Jerome

P.S: Was the JGLOBUS JIRA project removed: http://jira.globus.org/browse/JGLOBUS ?