Обсуждение: pgsql: Log LLVM library version in configure output.

Log LLVM library version in configure output.

When scanning build farm results, it's useful to be able to see which
version is in use.  For the Meson build system, this information was
already displayed.

Back-patch to all supported branches.

Discussion: https://postgr.es/m/4022690.1697852728%40sss.pgh.pa.us

Branch
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REL_11_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/0a6e2c7f86940f6d7c18c5dc2c50bf5f7ed3654d

Modified Files
--------------
config/llvm.m4 | 1 +
configure      | 2 ++
2 files changed, 3 insertions(+)