-bugfix and enhancement on subtemplate {include} and template {function} tags.

* Calling a template which has a nocache section could fail if it was
called from a cached and a not cached subtemplate.
* Calling the same subtemplate cached and not cached with the
$smarty->merge_compiled_includes enabled could cause problems
* Many smaller related changes

libs/sysplugins/smarty_internal_smartytemplatecompiler.php

@@ -86,7 +86,7 @@ class Smarty_Internal_SmartyTemplateCompiler extends Smarty_Internal_TemplateCom
      *
      * @return bool  true if compiling succeeded, false if it failed
      */
-    protected function doCompile($_content)
+    protected function doCompile($_content, $isTemplateSource = false)
     {
         /* here is where the compiling takes place. Smarty
           tags in the templates are replaces with PHP code,
@@ -94,6 +94,9 @@ class Smarty_Internal_SmartyTemplateCompiler extends Smarty_Internal_TemplateCom
         // init the lexer/parser to compile the template
         $this->lex = new $this->lexer_class($_content, $this);
         $this->parser = new $this->parser_class($this->lex, $this);
+        if ($isTemplateSource) {
+            $this->parser->insertPhpCode("<?php\n\$_smarty_tpl->properties['nocache_hash'] = '{$this->nocache_hash}';\n?>\n");
+        }
         if ($this->inheritance_child) {
             // start state on child templates
             $this->lex->yypushstate(Smarty_Internal_Templatelexer::CHILDBODY);