annotate COPYING @ 1203:936aa82884ab stable

evolve: cache marker encoding to avoid performance degradation

The main overhead in bug 4518 is caused by calculating relevant markers
and encoding markers into the correct format.

Calculating relevant markers takes (worst case) ~ 0.12 seconds.
Encoding markers takes (worst case) ~ 0.06 seconds.

Caching encoded markers takes care of the second part and
speeds up cloning in bug 4518 by about 35%.

		    GNU GENERAL PUBLIC LICENSE
		       Version 2, June 1991

 Copyright (C) 1989, 1991 Free Software Foundation, Inc.
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Also add information on how to contact you by electronic and paper mail.

If the program is interactive, make it output a short notice like this
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    Gnomovision version 69, Copyright (C) year  name of author
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  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
  `Gnomovision' (which makes passes at compilers) written by James Hacker.

  <signature of Ty Coon>, 1 April 1989
  Ty Coon, President of Vice

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