* Makefile.am: Include build-aux/regen-recursive.mk.
	(REGEN_SUBDIRS): Add doc and tests.
	(regen): Remove phony status (now handled by regen-recursive.mk).
	Rename target as...
	(regen-am): ...this.
	* doc/Makefile.am (regen): Remove phony status (now handled by
	regen-recursive.mk).
	(regen): Rename target as...
	(regen-am): ...this.
	Actually handle the generation and remove the dependency to permit
	forced regenerations.
	* tests/Makefile.am: Include build-aux/regen-recursive.mk.
	(REGEN_SUBDIRS): Add unit_test.
	* tests/unit_test/Makefile.am: Include build-aux/regen-recursive.mk.
	(regen): Remove phony status (now handled by regen-recursive.mk).
	Rename target as...
	(regen-am): ...this.
	Do not make unit-tests.mk read-only, since bootstrap expects it
	to be writable.
	($(srcdir)/unit-tests.mk): Likewise.

git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@4025 4aad255d-cdde-0310-9447-f3009e2ae8c0