Shadow does not initialize supplemental groups properly. #4437

When opening the user log, the shadow attempts to re-initialize the user
uids while in the user priv-state. This results in none of the user's
supplemental groups being set when opening the user log, which could
cause the open to fail.
Docs for cream_gahp bug fixes. #4416 #4440
Docs for improved directory access check. #4402
Support for Windows XP is no more.  Also brought a few more manual details
about Windows into this century. #4426
Merge branch 'V8_2-branch' of /p/condor/repository/CONDOR_SRC into V8_2-branch
Merge branch 'V8_2-branch' into V8_3_0-branch