[krbdev.mit.edu #8416] GSSAPI: External mechanism library loading issues

[Idan Freiberg via RT]

Hello,

Iv'e noticed 2 issues regarding the way GSSAPI is loading external mech
library, while testing the gss-ntlmssp extrenal mechanism library.

1. When GSSAPI is fails to load an external mechanism library ponted in
/etc/gss/mech.d/some_mech.conf, it doesn't throw any indicative error when
the library file doesn't exists or dlopen() fails.

2. GSSAPI says it recognizes the external mechanism as supported by using
*gss_indicate_mechs() *even if the mech library doesn't really exist or
dlopen() fails. means it only looking for the mech OID in external mech
.conf file in /etc/gss/mech.d/.

Those 2 issues can make a  confusion for users/developers.

Thanks for your efforts,
Idan.