pgsql: Revert "Fix bogus %name-prefix option syntax in all our Bison fi

Revert "Fix bogus %name-prefix option syntax in all our Bison files."

This reverts commit 4c5fde4e288983f30dae09a7eea8e6a9e6145477.

It turns out that the %name-prefix syntax without "=" does not work
at all in pre-2.4 Bison. We are not prepared to make such a large
jump in minimum required Bison version just to suppress a warning
message in a version hardly any developers are using yet.
When 3.0 gets more popular, we'll figure out a way to deal with this.
In the meantime, BISONFLAGS=-Wno-deprecated is recommendable for
anyone using 3.0 who doesn't want to see the warning.

Branch
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REL9_1_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/43c658f523dafa000eb887ddfa876700f07c745f

Modified Files
--------------
contrib/cube/cubeparse.y | 2 +-
contrib/seg/segparse.y | 2 +-
src/backend/bootstrap/bootparse.y | 2 +-
src/backend/parser/gram.y | 2 +-
src/backend/replication/repl_gram.y | 2 +-
src/interfaces/ecpg/preproc/ecpg.header | 2 +-
src/pl/plpgsql/src/gram.y | 2 +-
src/test/isolation/specparse.y | 2 +-
8 files changed, 8 insertions(+), 8 deletions(-)