netcf XML validation and input and output tests

* tests/interfaceschematest: test all XML data against the interface
  schemas
* tests/interfacexml2xmltest.c: parse and reserialize all XML data
  and check the output is identical
* tests/Makefile.am: hook up the tests
* tests/.gitignore: add ignore test

tests/interfaceschematest

@@ -0,0 +1,33 @@
+#!/bin/sh
+
+test -z "$srcdir" && srcdir=`pwd`
+test -z "$abs_srcdir" && abs_srcdir=`pwd`
+
+DIRS="interfaceschemadata"
+
+n=0
+f=0
+for dir in $DIRS
+do
+  XML=`find $abs_srcdir/$dir -name '*.xml'` || exit 1
+
+  for xml in $XML
+  do
+    n=`expr $n + 1`
+    printf "%4d) %.60s  " $n $(basename $(dirname $xml))"/"$(basename $xml)
+    result=`xmllint --relaxng $srcdir/../docs/schemas/interface.rng --noout $xml 2>&1`
+    ret=$?
+    if test $ret = 0; then
+        echo "OK"
+    else
+        echo "FAILED"
+        echo $result
+        f=`expr $f + 1`
+    fi
+  done
+done
+echo "Validated $n files, $f failed"
+
+ret=0
+test $f != 0 && ret=255
+exit $ret