1) when no domain used in ntlogin test command, should use default one

1) when no domain used in ntlogin test command, should use default one
   from previous lsaquery command.  over-ridden from DOMAIN\username

2) initialisation of cli_state is a little more specific: sets use_ntlmv2
   to Auto.  this can always be over-ridden.

3) fixed reusage of ntlmssp_cli_flgs which was being a pain

4) added pwd_compare() function then fixed bug in cli_use where NULL
   domain name was making connections multiply unfruitfully

5) type-casting of mallocs and Reallocs that cause ansi-c compilers to bitch
(This used to be commit 301a6efaf67ddc96e6dcfd21b45a82863ff8f39a)