Profile helper script
Link SRE
Dummy TupleDesc spiff pattern (no implementation yet)
Separate header file for spiff (just for organization)
Generic implementation
Init spiff when creating a TupleDesc; ensure natts (our one dependency so far) doesn't change out under us
Specialized implementation and a simple cache
Reorder code
Always allow compilation (for now)
Simple disk cache
Put a real function (heap_form_tuple) in the spiff
Update the spiff when attlen changes
Include attlen in invariant structure
config-debug.sh
Revert "Always allow compilation (for now)"

This reverts commit 2c5358f2220d0051e3fe87135f2c5b9934b58047.
Generic Implementation
SpecializeTupleDesc
Refactor pattern parameter
Link GLib
Use GString