Add lock to i386 asm.

Pass List* of Aggregs into executor, and create needed array there.
No longer need to double-processs Aggregs with second copy in Query.

Fix crash when doing:

	select sum(x+1) from test where 1 > 0;

Add a few lines of test code playing with the unique flag for unions.
 Does not do much helpful yet.

Check for duplicate implicit index names and generate unique names.

Implement PRIMARY KEY and UNIQUE clauses using indices.

Another PGINDENT run that changes variable indenting and case label indenting.  Also static variable indenting.

Generate non-fatal warning only and proceed by ignoring clauses.

Fix pgproc names over 15 chars in output.  Add strNcpy() function.  remove some (void) casts that are unnecessary.