[COMMITTERS] pgsql: PL/Perl portability fix: absorb relevant -D switches from Perl.

PL/Perl portability fix: absorb relevant -D switches from Perl.

Back-patch of commit 3c163a7fc76debbbdad1bdd3c43721cffe72f4db,
which see for more info.

Also throw in commit b4cc35fbb709bd6fcae8998f041fd731c9acbf42,
so Coverity doesn't whine about the back branches.

Ashutosh Sharma, some adjustments by me

Discussion: https://postgr.es/m/CANFyU97OVQ3+Mzfmt3MhuUm5NwPU=-FtbNH5Eb7nZL9ua8=rcA@mail.gmail.com

Branch
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REL9_3_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/0d8f015e7726f5c9635b0b435a4cdf4d6dcdfdbe

Modified Files
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config/perl.m4              | 25 +++++++++++++++++++++++++
configure                   | 13 +++++++++++++
configure.in                |  1 +
src/Makefile.global.in      |  1 +
src/pl/plperl/GNUmakefile   |  6 +++++-
src/pl/plperl/plperl.c      | 28 +++++++++++++++++-----------
src/tools/msvc/Mkvcbuild.pm | 21 ++++++++++++++++++++-
7 files changed, 82 insertions(+), 13 deletions(-)