pgsql: Assorted minor changes to silence Windows compiler warnings.

Assorted minor changes to silence Windows compiler warnings.

Mostly to do with macro redefinitions or object signedness.

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/860be17ec3c19a1aeba0bbe7ecaf30be409ea446

Modified Files
--------------
src/backend/main/main.c           |    2 +-
src/backend/port/win32/socket.c   |   14 ++++++++++++--
src/backend/utils/adt/pg_locale.c |   13 ++++++++++++-
src/bin/initdb/initdb.c           |    9 ++++++---
src/bin/pg_ctl/pg_ctl.c           |    4 +++-
src/include/port/win32.h          |    2 +-
src/pl/plperl/plperl.c            |    4 ++--
src/port/noblock.c                |    4 ++--
src/test/regress/pg_regress.c     |    4 +++-
src/timezone/pgtz.c               |    4 ++--
10 files changed, 44 insertions(+), 16 deletions(-)