Bug 5635: bulkmarcimport new parameters & features

Bug 5635: bulkmarcimport new parameters & features

See the script's documentation for more details

New parameters are:
 - authtypes
 - filter
 - insert
 - update
 - all

Signed-off-by: Pascale Nalon <pascale.nalon@gmail.com>
This patch is live in Mines ParisTech since 2012-07-24.
Signing off

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
 - Moved the sign-off from bugzilla to the commit message.
 - All tests and QA script pass.
 - Amended commit message to list new parameters.
 - Verified this patch works on a UNIMARC installation.
 - Verified normal import still works correct on a MARC21
   installation.
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>