(opts): Add -d option.
(GetPW): Add server parameter which is given to Net functions.
(ChangePW): Ditto.
(PrintPW): Ditto.
(SetModals): Ditto.
(usage): Add description for -d/--logonserver option.
(main): Add option handling for -d/--logonserver. Use LOGONSERVER
environment variable content for server to contact, unless
-d/--logonserver option is given. If both is missing, use NULL.
(version): Bump version number to 1.5.
(longopts): Add -c, -C, -e, -E, -p, -P options.
(opts): Ditto.
(PrintPW): Print values of UF_PASSWD_CANT_CHANGE and
UF_DONT_EXPIRE_PASSWD flags. Slightly reformat output. Don't suppress
correct system password settings just because the account has admin
privileges.
(usage): Define as "noreturn" function. Restructure and rephrase
output. Accomodate new options.
(print_version): Fix copyright dates.
(main): Accomodate new options for setting UF_PASSWD_CANT_CHANGE,
UF_DONT_EXPIRE_PASSWD and UF_PASSWD_NOTREQD settings.
(GetPW): Add parameter to (dis)allow printing of Windows username.
Use defines instead of numerical constants where possible.
Try avoiding impersonation problem. Rearrange to print Windows
username only if it's different from Cygwin username.
(ChangePW): Use defines instead of numerical constants where possible.
(main): Call GetPW with additional parameter. Change error text.
* passwd.c (GetPW): Handle case of user-edited /etc/passwd
with cygwin_internal (CW_EXTRACT_DOMAIN_AND_USER, ...).
checking old password and called for changing password. If called
for checking old password, return non-zero only if password is surely
incorrect.
(main): Call ChangePW() with additional parameter.
