Update paths for new aux-dir.

Autotools scripts are put in script, not the top directory, so update
paths for that.

.gitignore

@@ -14,23 +14,25 @@
 Makefile.in
 /aclocal.m4
 /autom4te.cache/
-/config.guess
 /config.h
 /config.h.in
 /config.log
 /config.status
-/config.sub
 /configure
-/depcomp
-/install-sh
 /libtool
-/ltmain.sh
 /m4/libtool.m4
 /m4/ltoptions.m4
 /m4/ltsugar.m4
 /m4/ltversion.m4
 /m4/lt~obsolete.m4
-/missing
+/script/compile
+/script/config.guess
+/script/config.sub
+/script/depcomp
+/script/install-sh
+/script/ltmain.sh
+/script/missing
+/script/test-driver
 /stamp-h1
 src/Makefile
 libsass/*