pgsql: Use symbolic names not octal constants for file permission flags

Use symbolic names not octal constants for file permission flags.

Purely cosmetic patch to make our coding standards more consistent ---
we were doing symbolic some places and octal other places. This patch
fixes all C-coded uses of mkdir, chmod, and umask. There might be some
other calls I missed. Inconsistency noted while researching tablespace
directory permissions issue.

Branch
------
master

Details
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http://git.postgresql.org/gitweb?p=postgresql.git;a=commitdiff;h=04f4e10cfc158239ca00a6ed6a84428c7acb1e6d

Modified Files
--------------
src/backend/access/transam/xlog.c | 2 +-
src/backend/commands/copy.c | 2 +-
src/backend/commands/tablespace.c | 2 +-
src/backend/libpq/be-fsstubs.c | 7 ++++---
src/backend/postmaster/postmaster.c | 4 ++--
src/backend/postmaster/syslogger.c | 6 +++---
src/backend/storage/file/copydir.c | 2 +-
src/backend/storage/ipc/ipc.c | 4 ++--
src/bin/initdb/initdb.c | 16 ++++++++--------
src/bin/pg_ctl/pg_ctl.c | 2 +-
10 files changed, 24 insertions(+), 23 deletions(-)