Give ipa-adduser, ipa-addgroup and ipa-usermod an interactive mode

Add ipa-passwd tool
Add simple field validation package
This patch adds a package requirement, python-krbV. This is needed to
 determine the current user based on their kerberos ticket.

ipa-python/freeipa-python.spec

@@ -10,7 +10,7 @@ Source0:        %{name}-%{version}.tgz
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 BuildArch: 	noarch
 
-Requires: python PyKerberos
+Requires: python PyKerberos python-krbV
 
 %{!?python_sitelib: %define python_sitelib %(%{__python} -c "from distutils.sysconfig import get_python_lib; print get_python_lib()")}