global index - work in progress

Hi,

I'm implementing "global index" - an index that indexes all tables in
an inheritance hierarchy. For complete feature description, please
refer README.user.

Attached zip contents:
1. README.user: features and limitations from user perspective
2. README.dev: design and implementation notes
3. global_index.sql, global_index.out: regression test and its output
4. tests.txt: concurrency test cases; this and the regression tests
should give an idea of how the feature actually works.
5. gbl_indx_wip1: patch file w.r.t. anoncvs checkout dated 1 Dec 08.

Please do provide any feedback you might have about the
implementation, and ideas regarding limitations/bugs.

Also, any ideas on how the concurrency tests can be automated?

Thanks,
Srinath.