pgsql: fix typo in regression Makefile.
Log Message:
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fix typo in regression Makefile.
Modified Files:
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pgsql/src/test/regress:
GNUmakefile (r1.69 -> r1.70)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/GNUmakefile?r1=1.69&r2=1.70)