zsh: enable module building when cross-compiling.

srcpkgs/zsh/template

@@ -1,7 +1,7 @@
 # Template file for 'zsh'
 pkgname=zsh
 version=5.0.7
-revision=2
+revision=3
 build_style=gnu-configure
 make_build_target="all info"
 make_install_args="install.info"
@@ -11,7 +11,10 @@ configure_args="--enable-etcdir=/etc/zsh --enable-zshenv=/etc/zsh/zshenv
  --enable-maildir-support --enable-function-subdirs
  --enable-fndir=/usr/share/zsh/functions --with-term-lib=ncursesw
  --enable-scriptdir=/usr/share/zsh/scripts --enable-pcre
- --enable-multibyte --enable-cap --with-tcsetpgrp"
+ --enable-multibyte --enable-cap --with-tcsetpgrp
+ zsh_cv_shared_environ=yes
+ zsh_cv_func_dlsym_needs_underscore=no
+ zsh_cv_sys_dynamic_execsyms=yes"
 hostmakedepends="pcre-devel"
 makedepends="gdbm-devel pcre-devel libcap-devel ncurses-devel"
 register_shell="/bin/zsh"