Adding testRelax.c, I forgot it, Daniel
diff --git a/testRelax.c b/testRelax.c
new file mode 100644
index 0000000..ac1052b
--- /dev/null
+++ b/testRelax.c
@@ -0,0 +1,184 @@
+/*
+ * testRelax.c : a small tester program for RelaxNG validation
+ *
+ * See Copyright for the status of this software.
+ *
+ * Daniel.Veillard@w3.org
+ */
+
+#include "libxml.h"
+#ifdef LIBXML_SCHEMAS_ENABLED
+
+#include <libxml/xmlversion.h>
+#include <libxml/parser.h>
+
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_SYS_MMAN_H
+#include <sys/mman.h>
+/* seems needed for Solaris */
+#ifndef MAP_FAILED
+#define MAP_FAILED ((void *) -1)
+#endif
+#endif
+
+#include <libxml/xmlmemory.h>
+#include <libxml/debugXML.h>
+#include <libxml/relaxng.h>
+
+#ifdef LIBXML_DEBUG_ENABLED
+static int debug = 0;
+#endif
+static int noout = 0;
+#ifdef HAVE_SYS_MMAN_H
+static int memory = 0;
+#endif
+
+
+int main(int argc, char **argv) {
+    int i;
+    int files = 0;
+    xmlRelaxNGPtr schema = NULL;
+
+    for (i = 1; i < argc ; i++) {
+#ifdef LIBXML_DEBUG_ENABLED
+	if ((!strcmp(argv[i], "-debug")) || (!strcmp(argv[i], "--debug")))
+	    debug++;
+	else
+#endif
+#ifdef HAVE_SYS_MMAN_H
+	if ((!strcmp(argv[i], "-memory")) || (!strcmp(argv[i], "--memory"))) {
+	    memory++;
+        } else
+#endif
+	if ((!strcmp(argv[i], "-noout")) || (!strcmp(argv[i], "--noout"))) {
+	    noout++;
+        }
+    }
+    xmlLineNumbersDefault(1);
+    for (i = 1; i < argc ; i++) {
+	if (argv[i][0] != '-') {
+	    if (schema == NULL) {
+		xmlRelaxNGParserCtxtPtr ctxt;
+
+#ifdef HAVE_SYS_MMAN_H
+		if (memory) {
+		    int fd;
+		    struct stat info;
+		    const char *base;
+		    if (stat(argv[i], &info) < 0) 
+			break;
+		    if ((fd = open(argv[i], O_RDONLY)) < 0)
+			break;
+		    base = mmap(NULL, info.st_size, PROT_READ,
+			        MAP_SHARED, fd, 0) ;
+		    if (base == (void *) MAP_FAILED)
+			break;
+
+		    ctxt = xmlRelaxNGNewMemParserCtxt((char *)base,info.st_size);
+
+		    xmlRelaxNGSetParserErrors(ctxt,
+			    (xmlRelaxNGValidityErrorFunc) fprintf,
+			    (xmlRelaxNGValidityWarningFunc) fprintf,
+			    stderr);
+		    schema = xmlRelaxNGParse(ctxt);
+		    xmlRelaxNGFreeParserCtxt(ctxt);
+		    munmap((char *) base, info.st_size);
+		} else
+#endif
+		{
+		    ctxt = xmlRelaxNGNewParserCtxt(argv[i]);
+		    xmlRelaxNGSetParserErrors(ctxt,
+			    (xmlRelaxNGValidityErrorFunc) fprintf,
+			    (xmlRelaxNGValidityWarningFunc) fprintf,
+			    stderr);
+		    schema = xmlRelaxNGParse(ctxt);
+		    xmlRelaxNGFreeParserCtxt(ctxt);
+		}
+		if (schema == NULL) {
+		    printf("Relax-NG schema %s failed to compile\n", argv[i]);
+		    files = -1;
+		    break;
+		}
+#ifdef LIBXML_DEBUG_ENABLED
+		if (debug)
+		    xmlRelaxNGDump(stdout, schema);
+#endif
+	    } else {
+		xmlDocPtr doc;
+
+		doc = xmlParseFile(argv[i]);
+
+		if (doc == NULL) {
+		    fprintf(stderr, "Could not parse %s\n", argv[i]);
+		} else {
+		    xmlRelaxNGValidCtxtPtr ctxt;
+		    int ret;
+
+		    ctxt = xmlRelaxNGNewValidCtxt(schema);
+		    xmlRelaxNGSetValidErrors(ctxt,
+			    (xmlRelaxNGValidityErrorFunc) fprintf,
+			    (xmlRelaxNGValidityWarningFunc) fprintf,
+			    stderr);
+		    ret = xmlRelaxNGValidateDoc(ctxt, doc);
+		    if (ret == 0) {
+			printf("%s validates\n", argv[i]);
+		    } else if (ret > 0) {
+			printf("%s fails to validate\n", argv[i]);
+		    } else {
+			printf("%s validation generated an internal error\n",
+			       argv[i]);
+		    }
+		    xmlRelaxNGFreeValidCtxt(ctxt);
+		    xmlFreeDoc(doc);
+		}
+	    }
+	    files ++;
+	}
+    }
+    if (schema != NULL)
+	xmlRelaxNGFree(schema);
+    if (files == 0) {
+	printf("Usage : %s [--debug] [--noout] schemas XMLfiles ...\n",
+	       argv[0]);
+	printf("\tParse the HTML files and output the result of the parsing\n");
+#ifdef LIBXML_DEBUG_ENABLED
+	printf("\t--debug : dump a debug tree of the in-memory document\n");
+#endif
+	printf("\t--noout : do not print the result\n");
+#ifdef HAVE_SYS_MMAN_H
+	printf("\t--memory : test the schemas in memory parsing\n");
+#endif
+    }
+    xmlRelaxNGCleanupTypes();
+    xmlCleanupParser();
+    xmlMemoryDump();
+
+    return(0);
+}
+
+#else
+#include <stdio.h>
+int main(int argc, char **argv) {
+    printf("%s : RelaxNG support not compiled in\n", argv[0]);
+    return(0);
+}
+#endif /* LIBXML_SCHEMAS_ENABLED */