Provide $config_shell for templates, by default set to /bin/sh.

--HG--
extra : convert_revision : 8630725f3e1d5d8feb54a352d3116197727b69b6

shutils/configure_funcs.sh

@@ -78,11 +78,15 @@ configure_src_phase()
 	. $XBPS_SHUTILSDIR/buildvars_funcs.sh
 	set_build_vars
 
+	if [ -z "${config_shell}" ]; then
+		config_shell=/bin/sh
+	fi
+
 	#
 	# Packages using GNU autoconf
 	#
 	if [ "$build_style" = "gnu_configure" ]; then
-		env CONFIG_SHELL=/bin/sh ${configure_script}	\
+		env CONFIG_SHELL=${config_shell} ${configure_script}	\
 			--prefix=/usr --sysconfdir=/etc		\
 			--infodir=/usr/share/info		\
 			--mandir=/usr/share/man			\

shutils/tmpl_funcs.sh

@@ -64,7 +64,7 @@ reset_tmpl_vars()
 			short_desc maintainer long_desc checksum wrksrc	\
 			patch_files make_cmd base_chroot register_shell \
 			make_build_target configure_script noextract \
-			pre_configure pre_build pre_install \
+			pre_configure pre_build pre_install config_shell \
 			post_configure post_build post_install \
 			make_install_target version revision \
 			sgml_catalogs xml_catalogs xml_entries sgml_entries \