pgAdmin III commit: Use the new syntax for sequence when possible

Use the new syntax for sequence when possible

In 8.4, the ALTER SEQUENCE can be used to rename a sequence, and to change the
owner of a sequence.

First patch from Thom Brown, few changes by me.

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=pgadmin3.git;a=commitdiff;h=2705867fbd700698df9f73a7fe15961c81010d00

Modified Files
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pgadmin/dlg/dlgSequence.cpp |   38 +++++++++++++++++++++++++++++++-------
1 files changed, 31 insertions(+), 7 deletions(-)