pgsql: exports.txt needs to use spaces as separators, not tabs, to work

Log Message:
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exports.txt needs to use spaces as separators, not tabs, to work properly
with the sed rules.

Modified Files:
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pgsql/src/interfaces/ecpg/compatlib:
exports.txt (r1.5 -> r1.6)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/compatlib/exports.txt?r1=1.5&r2=1.6)