path_mangling

This is only of interest for historical reasons.  The latest kludges have
eliminated the need for path mangling to be applied to config and make files.

Some of the commits in the kludge branches are labelled

02add_lib_dir.sh auto-patch
03swap_search_dirs.sh auto-patch

Early on it was found that trying to mess with certain things would require
cherry-picking to be manually interfered with extremely regularly, due to the
extent of the changes to certain files and the highly changing nature of those
files in the repository.

So these files look for likely candidate files in the whole tree based on their
names and filter them through sed.

They begin with 02 and 03 because in their directory there is also an 01
(it's called 01cherrypick-fixbuild.sh)

In this directory there is a single script - mangle_working_paths -that does
the whole thing in one step, but it doesn't attempt to make a commit or update
the index.