Improve lzjb decompress performance by reorganizing the code
to tighten the copy loop.

Submitted by:	Denis Ahrens <denis h3q com>
MFC after:	2 weeks
Approved by:	re (gjb)
Fix an inverted check for the master user in "camcontrol security -U".

PR:		bin/182703
Submitted by:	Scott Burns <scott@bqinternet.com>
Approved by:	re (gjb)
MFC after:	3 days