$(.CURDIR}/obj search while retaining compatability of new
prefix with cwd for the current source tree builds.
.TARGETOBJDIR has been removed from make and CANONICALOBJDIR set in
bsd.obj.mk
The builtin object directory searching is defined specifically as:
If MAKEOBJDIRPREFIX is defined, the search order is
${MAKEOBJDIRPREFIX}${.CURDIR}
${.CURDIR}
Else if MAKEOBJDIR is defined, the search order is
${MAKEOBJDIR}
${.CURDIR}
Otherwise, default to the search order
${.CURDIR}/obj.`uname -m`
$(.CURDIR}/obj
/usr/obj${.CURDIR}
${.CURDIR}
Reviewed by: bde
problems in the process:
1. Quoting should work properly now. In particular, Chet's reported bash
make problem has gone away.
2. A lot of memory that just wasn't being free'd after use is now freed.
This should cause make to take up a LOT less memory when dealing with
archive targets.
3. Give proper credit to Adam de Boor in a number of files.
Obtained from: NetBSD (and Adam de Boor)
