Merge branches/plugins2 to trunk.  Adds a password quality pluggable
interface described in this project page:

http://k5wiki.kerberos.org/wiki/Projects/Password_quality_pluggable_interface


https://github.com/krb5/krb5/commit/bd399cad888d90e99da3e5787040b34da857a34e
Commit By: ghudson
Revision: 24284
Changed Files:
U   trunk/doc/admin.texinfo
U   trunk/doc/krb5conf.texinfo
A   trunk/pwqual_combo/
U   trunk/src/config-files/krb5.conf.M
U   trunk/src/include/Makefile.in
U   trunk/src/include/k5-int.h
A   trunk/src/include/krb5/pwqual_plugin.h
U   trunk/src/lib/kadm5/kadm_err.et
U   trunk/src/lib/kadm5/server_internal.h
U   trunk/src/lib/kadm5/srv/Makefile.in
U   trunk/src/lib/kadm5/srv/libkadm5srv_mit.exports
A   trunk/src/lib/kadm5/srv/pwqual.c
A   trunk/src/lib/kadm5/srv/pwqual_dict.c
A   trunk/src/lib/kadm5/srv/pwqual_empty.c
A   trunk/src/lib/kadm5/srv/pwqual_hesiod.c
A   trunk/src/lib/kadm5/srv/pwqual_princ.c
D   trunk/src/lib/kadm5/srv/server_dict.c
U   trunk/src/lib/kadm5/srv/server_init.c
U   trunk/src/lib/kadm5/srv/server_misc.c
U   trunk/src/lib/kadm5/srv/svr_principal.c
U   trunk/src/lib/krb5/krb/Makefile.in
U   trunk/src/lib/krb5/krb/plugin.c