pgsql: Make capitalization of term "OpenSSL" more consistent

Make capitalization of term "OpenSSL" more consistent

This includes code comments and documentation.  No backpatch as this is
cosmetic even if there are documentation changes which are user-facing.

Author: Daniel Gustafsson
Discussion: https://postgr.es/m/BB89928E-2BC7-489E-A5E4-6D204B3954CF@yesql.se

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/dad5f8a3d51c8b12bfa0d2c635639fff9fad5155

Modified Files
--------------
contrib/pgcrypto/openssl.c               | 2 +-
doc/src/sgml/install-windows.sgml        | 6 +++---
doc/src/sgml/release-8.2.sgml            | 2 +-
doc/src/sgml/release-8.3.sgml            | 2 +-
doc/src/sgml/release-8.4.sgml            | 2 +-
doc/src/sgml/release-9.2.sgml            | 2 +-
doc/src/sgml/release-9.3.sgml            | 2 +-
doc/src/sgml/release-9.4.sgml            | 2 +-
doc/src/sgml/release-9.5.sgml            | 2 +-
doc/src/sgml/release-9.6.sgml            | 2 +-
src/backend/libpq/be-secure-openssl.c    | 6 +++---
src/interfaces/libpq/fe-secure-openssl.c | 2 +-
src/test/ssl/Makefile                    | 2 +-
13 files changed, 17 insertions(+), 17 deletions(-)