New custom version. Changes are:
- change: red warning 'That player is already being recorded by ...' is printed on center
- new: when recording is complete plugin prints easily noticable info with demo name into console
- change: more common algorithm for naming demos
- change: a few optimizations (pcvars, formatex, bools instead of integers)
- change: removed unnecessary command 'say /ac' and 'stop' client command 'support'.