Last commit:

Last commit:
- Fix segfault in xmldoc().
- Proper free zval in php_xpathptr_eval().

This one:
- Fix segfault in php_xpathptr_eval().
- Fix win32 build (TSRMLS_FETCH issues).
- More sanity checking in php_xpath_get_object(), php_xpath_get_context()
  and php_dom_get_object().
- Moved macros into header file.
- Register le_domxmldtd, le_domxmlcdatap (removes anoying warning message on shutdown).
- Fig segfault in node_children() with unsupported node types.
- Fix leak in php_domobject_new() with unsupported note types.
- Fix leak when freeing xpath context/objects.
- Reverted behaviour change to append_child() [old crashes].
- set_content() also sets the node->content property.

# Testers/patches/contribs welcome.