Fix the windows build - fix libtool

--- libetonyek/ltmain.sh.orig	2015-05-20 00:47:55.378800000 +0200
+++ libetonyek/ltmain.sh	2015-05-20 00:47:33.648000000 +0200
@@ -3722,6 +3722,8 @@
 	sleep 2
       done
     fi
+    # Cygwin ar.exe does not create directories for the objects!
+    mkdir -p $f_ex_an_ar_dir/contexts
     func_show_eval "(cd \$f_ex_an_ar_dir && $AR x \"\$f_ex_an_ar_oldlib\")" \
 		   'stat=$?; rm -f "$lockfile"; exit $stat'
     if test "$lock_old_archive_extraction" = yes; then
