pgsql: pgindent: more ways to find files to indent

pgindent: more ways to find files to indent

A new --commit option will add all the files in a commit to the file
list. The option can be specified more than once.

Also, if a directory is given on the command line, all the files in that
directory tree will be added to the file list.

Per suggestions from Robert Haas

Reviewed by Jelte Fennema

Discussion: https://postgr.es/m/CA+TgmoY59Ksso81RNLArNxj0a7xaqV_F_u7gSMHbgdc2kG5Vpw@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/068a243b7771890052a32c577a44c48facd34884

Modified Files
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src/tools/pgindent/pgindent | 60 ++++++++++++++++++++++++++++-----------------
1 file changed, 38 insertions(+), 22 deletions(-)