pgsql: Fix contrib/cube and contrib/seg to build with bison 3.0.

Fix contrib/cube and contrib/seg to build with bison 3.0.

These modules used the YYPARSE_PARAM macro, which has been deprecated
by the bison folk since 1.875, and which they finally removed in 3.0.
Adjust the code to use the replacement facility, %parse-param, which
is a much better solution anyway since it allows specification of the
type of the extra parser parameter. We can thus get rid of a lot of
unsightly casting.

Back-patch to all active branches, since somebody might try to build
a back branch with up-to-date tools.

Branch
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REL9_0_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/3587f7825f11da09a65218be68340b3b8eeeff35

Modified Files
--------------
contrib/cube/cube.c | 8 +++---
contrib/cube/cubeparse.y | 18 ++++++------
contrib/cube/cubescan.l | 2 +-
contrib/seg/seg.c | 6 ++--
contrib/seg/segparse.y | 71 +++++++++++++++++++++++-----------------------
contrib/seg/segscan.l | 2 +-
6 files changed, 54 insertions(+), 53 deletions(-)