[COMMITTERS] pgsql: Improve vpath support in plperl build

Improve vpath support in plperl build

Run xsubpp with the -output option instead of redirecting stdout.  That
ensures that the #line directives in the output file point to the right
place in a vpath build.  This in turn fixes an error in coverage builds
that it can't find the source files.

Refactor the makefile rules while we're here.

Reviewed-by: Michael Paquier <michael.paquier@gmail.com>

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/639928c988c1c2f52bbe7ca89e8c7c78a041b3e2

Modified Files
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src/pl/plperl/GNUmakefile | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)


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