changed 'make tests' to use a concise output, scrolling to see where thing

* Makefile.am: changed 'make tests' to use a concise output,
  scrolling to see where thing broke wasn't pleasant
* configure.in: some beta4 preparation, but not ready yet
* error.c globals.c include/libxml/globals.h include/libxml/xmlerror.h:
  new error handling code, last error informations are stored
  in the parsing context or a global variable, new APIs to
  handle the xmlErrorPtr type.
* parser.c parserInternals.c valid.c : started migrating to the
  new error handling code, it's a royal pain.
* include/libxml/parser.h include/libxml/parserInternals.h:
  moved the definition of xmlNewParserCtxt()
* parser.c: small potential buffer access problem in push code
  provided by Justin Fletcher
* result/*.sax result/VC/PENesting* result/namespaces/*
  result/valid/*.err: some error messages were sligthly changed.
Daniel

include/libxml/globals.h

@@ -58,8 +58,9 @@ XMLPUBFUN void XMLCALL xmlCleanupGlobals(void);
 #undef	xmlRealloc
 #undef	xmlSaveNoEmptyTags
 #undef	xmlSubstituteEntitiesDefaultValue
-#undef xmlRegisterNodeDefaultValue
-#undef xmlDeregisterNodeDefaultValue
+#undef  xmlRegisterNodeDefaultValue
+#undef  xmlDeregisterNodeDefaultValue
+#undef  xmlLastError
 
 typedef void (*xmlRegisterNodeFunc) (xmlNodePtr node);
 typedef void (*xmlDeregisterNodeFunc) (xmlNodePtr node);
@@ -105,6 +106,7 @@ struct _xmlGlobalState
   	xmlDeregisterNodeFunc xmlDeregisterNodeDefaultValue;
 
 	xmlMallocFunc xmlMallocAtomic;
+	xmlError xmlLastError;
 };
 
 #ifdef __cplusplus
@@ -203,6 +205,13 @@ XMLPUBVAR xmlSAXHandlerV1 htmlDefaultSAXHandler;
 #endif
 #endif
 
+XMLPUBFUN xmlError * XMLCALL __xmlLastError(void);
+#ifdef LIBXML_THREAD_ENABLED
+#define xmlLastError \
+(*(__xmlLastError()))
+#else
+XMLPUBVAR xmlError xmlLastError;
+#endif
 
 /*
  * Everything starting from the line below is

include/libxml/parser.h

@@ -15,6 +15,7 @@
 #include <libxml/hash.h>
 #include <libxml/valid.h>
 #include <libxml/entities.h>
+#include <libxml/xmlerror.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -272,6 +273,11 @@ struct _xmlParserCtxt {
     xmlNodePtr        freeElems;    /* List of freed element nodes */
     int               freeAttrsNr;  /* number of freed attributes nodes */
     xmlAttrPtr        freeAttrs;    /* List of freed attributes nodes */
+
+    /*
+     * the complete error informations for the last error.
+     */
+    xmlError          lastError;
 };
 
 /**
@@ -977,6 +983,8 @@ XMLPUBFUN int XMLCALL
 /*
  * Parser contexts handling.
  */
+XMLPUBFUN xmlParserCtxtPtr XMLCALL	
+		xmlNewParserCtxt	(void);
 XMLPUBFUN int XMLCALL		
 		xmlInitParserCtxt	(xmlParserCtxtPtr ctxt);
 XMLPUBFUN void XMLCALL		

include/libxml/parserInternals.h

@@ -211,8 +211,6 @@ XMLPUBFUN xmlParserCtxtPtr XMLCALL
 XMLPUBFUN xmlParserCtxtPtr XMLCALL	
 			xmlCreateMemoryParserCtxt(const char *buffer,
 						 int size);
-XMLPUBFUN xmlParserCtxtPtr XMLCALL	
-			xmlNewParserCtxt	(void);
 XMLPUBFUN xmlParserCtxtPtr XMLCALL	
 			xmlCreateEntityParserCtxt(const xmlChar *URL,
 						 const xmlChar *ID,

include/libxml/xmlerror.h

@@ -7,6 +7,70 @@
 extern "C" {
 #endif
 
+/**
+ * xmlErrorLevel:
+ *
+ * Indicates the level of an error
+ */
+typedef enum {
+    XML_ERR_NONE = 0,
+    XML_ERR_WARNING = 1,	/* A simple warning */
+    XML_ERR_ERROR = 2,		/* A recoverable error */
+    XML_ERR_FATAL = 3		/* A fatal error */
+} xmlErrorLevel;
+
+/**
+ * xmlErrorDomain:
+ *
+ * Indicates where an error may have come from
+ */
+typedef enum {
+    XML_FROM_NONE = 0,
+    XML_FROM_PARSER,	/* The XML parser */
+    XML_FROM_NAMESPACE,	/* The XML Namespace module */
+    XML_FROM_DTD,	/* The XML DTD validation */
+    XML_FROM_HTML,	/* The HTML parser */
+    XML_FROM_MEMORY,	/* The memory allocator */
+    XML_FROM_OUTPUT,	/* The serialization code */
+    XML_FROM_IO,		/* The Input/Output stack */
+    XML_FROM_XINCLUDE,	/* The XInclude processing */
+    XML_FROM_XPATH,	/* The XPath module */
+    XML_FROM_XPOINTER,	/* The XPointer module */
+    XML_FROM_REGEXP,	/* The regular expressions module */
+    XML_FROM_SCHEMAS,	/* The W3C XML Schemas module */
+    XML_FROM_RELAXNG,	/* The Relax-NG module */
+    XML_FROM_CATALOG,	/* The Catalog module */
+    XML_FROM_C14N,	/* The Canonicalization module */
+    XML_FROM_XSLT	/* The XSLT engine from libxslt */
+} xmlErrorDomain;
+
+/**
+ * xmlError:
+ *
+ * An XML Error instance.
+ */
+
+typedef struct _xmlError xmlError;
+typedef xmlError *xmlErrorPtr;
+struct _xmlError {
+    int		domain;	/* What part of the library raised this error */
+    int		code;	/* The error code, e.g. an xmlParserError */
+    char       *message;/* human-readable informative error message */
+    xmlErrorLevel level;/* how consequent is the error */
+    char       *file;	/* the filename */
+    int		line;	/* the line number if available */
+    char       *str1;	/* extra string information */
+    char       *str2;	/* extra string information */
+    char       *str3;	/* extra string information */
+    int		int1;	/* extra number information */
+    int		int2;	/* extra number information */
+};
+
+/**
+ * xmlParserError:
+ *
+ * This is an error that the XML (or HTML) parser can generate
+ */
 typedef enum {
     XML_ERR_OK = 0,
     XML_ERR_INTERNAL_ERROR,
@@ -141,7 +205,11 @@ typedef enum {
     XML_NS_ERR_QNAME,
     XML_NS_ERR_ATTRIBUTE_REDEFINED,
     XML_ERR_CONDSEC_INVALID_KEYWORD,
-    XML_ERR_VERSION_MISSING
+    XML_ERR_VERSION_MISSING,
+    XML_DTD_MIXED_CORRUPT,
+    XML_DTD_NO_DOC,
+    XML_DTD_NO_ELEM_NAME,
+    XML_DTD_NOTATION_REDEFINED
 } xmlParserErrors;
 
 /**
@@ -192,6 +260,40 @@ XMLPUBFUN void XMLCALL
 XMLPUBFUN void XMLCALL	
     xmlParserPrintFileContext	(xmlParserInputPtr input);
 
+/*
+ * Extended error information routines
+ */
+XMLPUBFUN xmlErrorPtr XMLCALL
+    xmlGetLastError		(void);
+XMLPUBFUN void XMLCALL
+    xmlResetLastError		(void);
+XMLPUBFUN xmlErrorPtr XMLCALL
+    xmlCtxtGetLastError		(void *ctx);
+XMLPUBFUN void XMLCALL
+    xmlCtxtResetLastError	(void *ctx);
+XMLPUBFUN void XMLCALL
+    xmlResetError		(xmlErrorPtr err);
+XMLPUBFUN int XMLCALL
+    xmlCopyError		(xmlErrorPtr from,
+    				 xmlErrorPtr to);
+
+/*
+ * Intended for internal use mostly
+ */
+XMLPUBFUN void XMLCALL
+    xmlRaiseError		(void *ctx,
+    				 int domain,
+				 int code,
+				 xmlErrorLevel level,
+				 const char *file,
+				 int line,
+				 const char *str1,
+				 const char *str2,
+				 const char *str3,
+				 int int1,
+				 int int2,
+				 const char *msg,
+				 ...);
 #ifdef __cplusplus
 }
 #endif