This subdirectory was used to store experimental patches on some older
version-control system where branching (or discussing branches?) was
inconvenient. It doesn't make much sense anymore now, and getting rid
of it simplifies a couple places that had to grow around it.
Suggested-by: Nicolás Ojeda Bär
(no change entry needed)
* Remove the now obsolete comments at the beginning of the main Makefile
* Move and fix documentation of the bootstrap from INSTALL to
HACKING-bootstrap.adoc
* Update install instructions
In the interest of keeping HACKING.adoc not-too-long and
general-purpose, advice on modifying specific sub-systems of the
compiler distribution should be moved to the directory of this
sub-system.
This PR also clarifies the relations between the README, INSTALL,
HACKING and CONTRIBUTING documents.