a lot of small cleanups based on Linus' sparse check output. Daniel

* HTMLparser.c SAX2.c encoding.c globals.c parser.c relaxng.c
  runsuite.c runtest.c schematron.c testHTML.c testReader.c
  testRegexp.c testSAX.c testThreads.c valid.c xinclude.c xmlIO.c
  xmllint.c xmlmodule.c xmlschemas.c xpath.c xpointer.c: a lot of
  small cleanups based on Linus' sparse check output.
Daniel

testRegexp.c

@@ -12,8 +12,8 @@
 #include <libxml/tree.h>
 #include <libxml/xmlregexp.h>
 
-int repeat = 0;
-int debug = 0;
+static int repeat = 0;
+static int debug = 0;
 
 static void testRegexp(xmlRegexpPtr comp, const char *value) {
     int ret;