Freetype think that it knows best about where libtool is, and explicitly the
libtool autoconf macros telling it where to find the libtool script.  Of course
we prefix the script with the target triplet, so it's wrong.  Fix this by
removing the forced assignment, so the configure script's knowledge of where it
put libtool is used.

Upstream-Status: Pending
Signed-off-by: Ross Burton <ross.burton@intel.com>

--- freetype-2.6/builds/unix/unix-cc.in.orig	2016-01-07 19:21:45.244943479 +0000
+++ freetype-2.6/builds/unix/unix-cc.in	2016-01-07 19:21:50.213112131 +0000
@@ -19,1 +18,1 @@
-LIBTOOL := $(FT_LIBTOOL_DIR)/libtool
+LIBTOOL := $(FT_LIBTOOL_DIR)/@LIBTOOL@ --tag CC