[CSRSRV]
Use symbolic constant for number of hash buckets and use it where appropriate (fixing one missing location).

git-svn-id: svn://svn.reactos.org/reactos/trunk@59592 97493ccd-5924-5043-b1f5-66cb403b36ce
[RSYM]
* Speedup FindOrAddString(). Brought to you by Art Yerkes (arty).

git-svn-id: svn://svn.reactos.org/reactos/trunk@59593 97493ccd-5924-5043-b1f5-66cb403b36ce
[SAMSRV]
Use a common routine to check all account names.

git-svn-id: svn://svn.reactos.org/reactos/trunk@59594 97493ccd-5924-5043-b1f5-66cb403b36ce