Обсуждение: pgsql: Add configure tests for stdbool.h and sizeof bool

Add configure tests for stdbool.h and sizeof bool

This will allow us to assess how many platforms have bool with a size
other than 1, which will help us decide how to go forward with using
stdbool.h.

Discussion: https://www.postgresql.org/message-id/flat/3a0fe7e1-5ed1-414b-9230-53bbc0ed1f49@2ndquadrant.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/f20b3285340cc0576ab8445f483700983cf2ba9f

Modified Files
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configure                  | 213 ++++++++++++++++++++++++++++++++++++---------
configure.in               |   7 ++
src/include/pg_config.h.in |   9 ++
3 files changed, 188 insertions(+), 41 deletions(-)