buildroot

Fix autoreconf libtool patching

Some ltmain.sh files enclose the version number in quotes. This is
already handled corretly by pkg-autotools.mk in LIBTOOL_PATCH_HOOK.
This patch adds the same fix for AUTORECONF_HOOK.

Signed-off-by: przemyslaw <przemyslaw.wrzos@calyptech.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>