auth: update the auth test programs

auth: update the auth test programs

Fix build errors for the auth test programs.

Close the configuration directory before exiting the testcellconf
program so we can check for leaks.

Add a call to afsconf_GetExtendedCellInfo to the testcellconf test
program.

Use libcmd to parse the testcellconf command line options.

Add the -reload option to testcellconf to perform an optional reload
test. The user must have file permissions to touch the CellServDB to
perform the reload test.

Change-Id: I1cb4cacf9a15ccf7066fb32bfe5f5d03ef64bfd7
Reviewed-on: https://gerrit.openafs.org/13394
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: Benjamin Kaduk <kaduk@mit.edu>