pgAdmin III commit: Overhaul of type attributes modification

Overhaul of type attributes modification

If you add, delete, rename or change the type, collation or precision
of a composite type attribute, it deletes all of them then adds them
all back in.  Obviously attribute additions, deletions and modifications
may only occur for types under PostgreSQL 9.1, but it's a bit extreme
to actually drop all types if you're adding a new one in, or just
removing one.  Also, if you rename a type's element or change the type
of a type's element, it drops all attributes again then re-adds them,
just to have an attribute with a different name.

So this patch tries to do it right, with the minimum required queries.

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=pgadmin3.git;a=commitdiff;h=3912be3f48d7e48c3c479bd10f3e7a2f6735dab1
Author: Thom Brown <thom@linux.com>

Modified Files
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pgadmin/dlg/dlgType.cpp       |  170 ++++++++++++++++++++++++++++------------
pgadmin/include/dlg/dlgType.h |    2 +-
2 files changed, 120 insertions(+), 52 deletions(-)