[PATCH 0/5] Improve performance of rule handling

[Mark Seaborn]

Here is a series of patches to improve make's performance in handling
large numbers of pattern rules.  The motivation is to make glibc's
build process faster.  The change speeds up adding new pattern rules,
but it does not speed up finding pattern rules that match a given
filename.

I have not changed the logic that decides whether one rule should
override another.

The patches are based on CVS HEAD.

Cheers,
Mark