Installed files have better permissions.

Requires build.zsh 0.4.0.

project.zsh

@@ -21,12 +21,14 @@ type[src/config.cr]=script
 sources[src/config.cr]=src/config.cr.in
 install[src/config.cr]=false
 auto[src/config.cr]=true # Don’t display it in `make help`.
+chmod[src/config.cr]=0644
 
 for file in services/*.spec; do
 	targets+=($file)
 	type[$file]=script
 	install[$file]='$(SHAREDIR)/services'
 	auto[$file]=true
+	chmod[$file]=0644
 done
 
 for file in templates/*.j2; do
@@ -34,6 +36,7 @@ for file in templates/*.j2; do
 	type[$file]=script
 	install[$file]='$(SYSCONFDIR)/templates'
 	auto[$file]=true
+	chmod[$file]=0644
 done
 
 # FIXME: This should be upstreamed.