patch for contrib/intarray (7.2 and 7.3)

Please apply attached patch to contrib/intarray (7.2, 7.3).

Fixed bug with '=' operator for gist__int_ops and
define '=' operator for gist__intbig_ops opclass.
Now '=' operator is consistent with standard 'array' type.
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Tnanks Achilleus Mantzios for bug report and suggestion.

Regards,
Oleg
_____________________________________________________________
Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute, Moscow University (Russia)
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(095)939-16-83, +007(095)939-23-83