zile: fix on-device build

packages/zile/configure-pthreads-no-weak.patch

@@ -0,0 +1,12 @@
+diff -uNr zile-2.4.14/configure zile-2.4.14.mod/configure
+--- zile-2.4.14/configure	2017-10-06 17:28:11.000000000 +0300
++++ zile-2.4.14.mod/configure	2019-08-16 18:37:49.584471922 +0300
+@@ -13977,7 +13977,7 @@
+           if test -n "$LIBMULTITHREAD" || test -n "$LTLIBMULTITHREAD"; then
+             if case "$gl_cv_have_weak" in *yes) true;; *) false;; esac; then
+ 
+-$as_echo "#define USE_POSIX_THREADS_WEAK 1" >>confdefs.h
++#$as_echo "#define USE_POSIX_THREADS_WEAK 1" >>confdefs.h
+ 
+               LIBTHREAD=
+               LTLIBTHREAD=