rpcclient: Fix and enhance rpcclient output

rpcclient: Fix and enhance rpcclient output

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11085

When rpcclient is called like:
$ rpcclient -c "getdata . Osversion"
at end of output is added one nonsense line
OsVersion: Osversion:

This patch removes this line and adds more human friendly ouput:
OsMajor: num
OsMinor: num
OsBuild: num

for OsVersion query.

For OsVersionEx two more lines are added:
OsMajor: num
OsMinor: num
OsBuild: num
ServicePackMajor: num
ServicePackMinor: num

Signed-off-by: Robin Hack <hack.robin@gmail.com>
Reviewed-by: Andreas Schneider <asn@samba.org>
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>