pgsql: pg_regress: Use target-specific variable instead of overriding m

pg_regress: Use target-specific variable instead of overriding make rule

Use a target-specific variable to add to CPPFLAGS instead of writing a
custom .c -> .o rule.  This will ensure that dependency tracking is
used when enabled.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/d66b31c94faf2b8b8aac9d273c8cd1708a54887e

Modified Files
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src/test/regress/GNUmakefile |    2 +-
1 files changed, 1 insertions(+), 1 deletions(-)