Please apply patch for 7.2.1

Hi,

please apply attached patch for 7.2.1

intarray:
add check size of array for gist__int_ops
tsearch:
make signature if index key is greater than TOAST_INDEX_TARGET
For all operations gist_txtidx_ops amopreqcheck=true,
i.e. index is lossy.

This patch is also available from http://www.sai.msu.su/~megera/postgres/gist/

Thanks to Poul L. Christiansen for spotting the bug.
(next time, please submit bug report in beta cycle :-)

Regards,
Oleg