psqlodbc - psqlodbc: Convert large integer strings properly.

Log Message:
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Convert large integer strings properly.

Modified Files:
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psqlodbc:
convert.c (r1.193 -> r1.194)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/psqlodbc/psqlodbc/convert.c?r1=1.193&r2=1.194)
version.h (r1.186 -> r1.187)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/psqlodbc/psqlodbc/version.h?r1=1.186&r2=1.187)