pgsql: Replace doc references to install-win32 with install-windows.

Replace doc references to install-win32 with install-windows.

Windows is not necessarily 32-bit, any more.

As suggested by Mike Toews.

Branch
------
master

Details
-------
http://git.postgresql.org/gitweb?p=postgresql.git;a=commitdiff;h=3186560f46b5076feb8776ae5e600b7ea0f31852

Modified Files
--------------
doc/src/sgml/filelist.sgml        |    2 +-
doc/src/sgml/install-win32.sgml   |  547 -------------------------------------
doc/src/sgml/install-windows.sgml |  547 +++++++++++++++++++++++++++++++++++++
doc/src/sgml/installation.sgml    |    4 +-
doc/src/sgml/release-9.0.sgml     |    6 +-
5 files changed, 553 insertions(+), 553 deletions(-)