added an XML description of the API, moved the script generating it here.

* Makefile.am doc/Makefile.am doc/libxml2-api.xml doc/parsedecl.py:
  added an XML description of the API, moved the script generating
  it here. Added a "make api" target
Daniel
diff --git a/Makefile.am b/Makefile.am
index 1b726b8..b604a33 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,5 +1,5 @@
 ## Process this file with automake to produce Makefile.in
-AUTOMAKE_OPTIONS=no-dependencies
+#AUTOMAKE_OPTIONS=no-dependencies
 
 SUBDIRS = include . doc example