Create a ccache get-flags operation.

Create a ccache get-flags operation.
The MSLSA and CCAPI versions are untested!

* cc_file.c (krb5_fcc_get_flags): New function.
(krb5_fcc_ops, krb5_cc_file_ops): Add it.
* cc_memory.c (krb5_mcc_get_flags): New function.
(krb5_mcc_ops): Add it.
* cc_mslsa.c (krb5_lcc_get_flags): New function.
(krb5_lcc_ops): Add it.
* ccfns.c (krb5_cc_get_flags): New function.
* ccapi/stdcc.c (krb5_stdcc_get_flags): New function.
(krb5_cc_stdcc_ops): Add it.
* ccapi/stdcc.h (krb5_stdcc_get_flags): Declare.

ticket: 2763
status: open

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@16871 dc483132-0cff-0310-8789-dd5450dbe970