* Flip \ to / where possible.
* Introduce $(DIRSEP) (/ or \) for use inside commands in makefiles
where / won't work in DOS.
* Override various settings for Linux in owlinux.mak.
* Add quotes in exeflat.c to avoid shell expansion of $$$$$.
* Let "make all", "make clean", and "make clobber" do the job.
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@1387 6ac86273-5f31-0410-b378-82cca8765d1b
