zfsonlinux/spl — pull request #78 by dajhorn (2012-01-14 04:40:25+00:00)
Title: Fix `make distclean` for `--with-config=user`

Apply the same fix to SPL that was applied to ZFS earlier at:
zfsonlinux/zfs@d433c206515e567c52ce09589033405a0ae3716e

Additionally quote `@LINUX_SYMBOLS@` because it is a null substitution
in this coniguration, which results in a `[ -f ]` expression that
incorrectly evaluates to true.

```
# ./configure --with-config=user
# make distclean

Making distclean in module
make[1]: Entering directory `/spl/module'
make -C SUBDIRS=`pwd` clean
make: Entering an unknown directory
make: *** SUBDIRS=/spl/module: No such file or directory. Stop.
```