[krbdev.mit.edu #3542] Updates to NetIDMgr for KFW 3.1

[Jeffrey Altman via RT]

Things that remain to be done include updating the PDF end user
documentation and modifying the installers to conditionally install the
Windows 2000 versions of the netidmgr.exe and netidmgr.dll (plus pdb)
files.  These will be done after the credential cache work is performed.