pgsql: Fix PL/Python build on MSVC with older Meson

Fix PL/Python build on MSVC with older Meson

Amendment for commit 2bc60f86219. With older Meson versions, we need
to specify the Python include directory directly to cc.check_header
instead of relying on the dependency to pass it through.

Author: Bryan Green <dbryan.green@gmail.com>
Discussion: /messages/by-id/0de98c41-4145-44c1-aac5-087cf5b3e4a9@gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/6831cd9e3b082d7b830c3196742dd49e3540c49b

Modified Files
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meson.build | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)