pgsql: MSVC builds must use a separate stamp file for copyinggenerated

MSVC builds must use a separate stamp file for copying generated headers.

Commit bad51a49a tried to use a shortcut with just one stamp file
recording the actions of generating the pg_*_d.h headers and copying
them to the src/include/catalog/ directory.  That doesn't work in all
scenarios though, so we must use two stamp files like the Makefiles do.

John Naylor

Discussion: https://postgr.es/m/CANFyU944GdHr=puPbA78STnqr=8kgMrGF-VDHck6aO_-qNDALg@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/a194106c1b4468c74dbf6e83d845be86239844aa

Modified Files
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src/tools/msvc/Solution.pm | 8 ++++++++
src/tools/msvc/clean.bat   | 1 +
2 files changed, 9 insertions(+)