Move dirpersist to plugin

plugins/dirpersist.plugin.zsh

@@ -0,0 +1,22 @@
+#!/bin/zsh
+# 
+# Make the dirstack more persistant
+# 
+# Run dirpersiststore in ~/.zlogout
+
+dirpersiststore () {
+    dirs -p | tail -r | perl -ne 'chomp;s/([& ])/\\$1/g ;print "if [ -d $_ ]; then pushd -q $_; fi\n"' > ~/.zdirstore
+}
+
+dirpersistrestore () {
+    if [ -f ~/.zdirstore ]; then
+        source ~/.zdirstore
+    fi
+}
+
+DIRSTACKSIZE=10
+setopt autopushd pushdminus pushdsilent pushdtohome pushdignoredups
+dirpersistrestore
+
+# Make popd changes permanent without having to wait for logout
+alias popd="popd;dirpersiststore"