pgsql: Rename pgindent options

Rename pgindent options

--show-diff becomes --diff, and --silent-diff becomes --check. These
options may now be given together. Without --check, --diff will exit
with a zero status even if diffs are found. With --check, it will now
exit with a non-zero status in that case.

Author: Tristan Partin
Reviewed-by: Daniel Gustafsson, Jelte Fennema-Nio

Discussion: /messages/by-id/CXLX2XYTH9S6.140SC6Y61VD88@neon.tech

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/387aecc948ed2fa39e04f84d9eea086d32ebd42e

Modified Files
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src/tools/pgindent/pgindent | 39 +++++++++++++++++++++------------------
src/tools/pgindent/pgindent.man | 12 ++++++------
2 files changed, 27 insertions(+), 24 deletions(-)