Some infrastructure work, and of course some debug:

- TODO: more stuff
- libxslt/transform.c: context position and size in for-each
- libxslt/xsltutils[ch] libxslt/makefile.am: added the util module
  and put Error and Debug routines
- libxslt/xslt.c libxslt/transform.c libxslt/pattern.c: switched
  to use the Debug calls, cleanup
- libxslt/xsltproc.c: added -v to enable debug printing
Daniel

libxslt/xsltutils.h

@@ -0,0 +1,63 @@
+/*
+ * xsltutils.h: interfaces for the utilities module of the XSLT engine
+ *
+ * See Copyright for the status of this software.
+ *
+ * Daniel.Veillard@w3.org
+ */
+
+#ifndef __XML_XSLTUTILS_H__
+#define __XML_XSLTUTILS_H__
+
+#include <libxml/xpath.h>
+#include <libxml/xmlerror.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * To cleanup
+ */
+xmlChar *xmlSplitQName2(const xmlChar *name, xmlChar **prefix);
+void xmlXPathBooleanFunction(xmlXPathParserContextPtr ctxt, int nargs);
+
+/*
+ * Useful macros
+ */
+
+#define TODO 								\
+    xsltGenericError(xsltGenericErrorContext,				\
+	    "Unimplemented block at %s:%d\n",				\
+            __FILE__, __LINE__);
+
+#define STRANGE 							\
+    xsltGenericError(xsltGenericErrorContext,				\
+	    "Internal error at %s:%d\n",				\
+            __FILE__, __LINE__);
+
+#define IS_XSLT_ELEM(n)							\
+    ((n)->ns != NULL) && (xmlStrEqual((n)->ns->href, XSLT_NAMESPACE))
+
+#define IS_XSLT_NAME(n, val)						\
+    (xmlStrEqual((n)->name, (const xmlChar *) (val)))
+
+
+/*
+ * XSLT specific error and debug reporting functions
+ */
+extern xmlGenericErrorFunc xsltGenericError;
+extern void *xsltGenericErrorContext;
+extern xmlGenericErrorFunc xsltGenericDebug;
+extern void *xsltGenericDebugContext;
+
+void		xsltSetGenericErrorFunc		(void *ctx,
+						 xmlGenericErrorFunc handler);
+void		xsltSetGenericDebugFunc		(void *ctx,
+						 xmlGenericErrorFunc handler);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __XML_XSLTUTILS_H__ */
+