Log Message:
-----------
Remove GIST concurrency limitations section.
Christopher Kings-Lynne
Modified Files:
--------------
pgsql/doc/src/sgml:
gist.sgml (r1.20 -> r1.21)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/gist.sgml.diff?r1=1.20&r2=1.21)