make sure to register EXSLT for the bindings add a specific test minor

* python/libxslt.c: make sure to register EXSLT for the bindings
* python/tests/Makefile.am python/tests/exslt.py: add a specific test
* xsltproc/xsltproc.c: minor cleanup
Daniel

python/tests/exslt.py

@@ -0,0 +1,57 @@
+#!/usr/bin/python -u
+import sys
+import libxml2
+import libxslt
+
+# Memory debug specific
+libxml2.debugMemory(1)
+
+
+styledoc = libxml2.parseDoc(
+"""<?xml version="1.0"?>
+<xsl:stylesheet version="1.0"
+    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+    xmlns:str="http://exslt.org/strings"
+    exclude-result-prefixes="str">
+
+<xsl:template match="/">
+<out>;
+  str:tokenize('2001-06-03T11:40:23', '-T:')
+  <xsl:copy-of select="str:tokenize('2001-06-03T11:40:23', '-T:')"/>;
+
+  str:tokenize('date math str')
+  <xsl:copy-of select="str:tokenize('date math str')"/>;
+</out>
+</xsl:template>
+
+</xsl:stylesheet>
+""")
+style = libxslt.parseStylesheetDoc(styledoc)
+doc = libxml2.parseDoc("<doc/>")
+result = style.applyStylesheet(doc, None)
+stringval = style.saveResultToString(result)
+style.freeStylesheet()
+doc.freeDoc()
+result.freeDoc()
+
+expect="""<?xml version="1.0"?>
+<out>;
+  str:tokenize('2001-06-03T11:40:23', '-T:')
+  <token>2001</token><token>06</token><token>03</token><token>11</token><token>40</token><token>23</token>;
+
+  str:tokenize('date math str')
+  <token>date</token><token>math</token><token>str</token>;
+</out>
+"""
+
+if stringval != expect:
+  print "Exslt processing failed"
+  sys.exit(255)
+    
+# Memory debug specific
+libxslt.cleanup()
+if libxml2.debugMemory(1) == 0:
+    print "OK"
+else:
+    print "Memory leak %d bytes" % (libxml2.debugMemory(1))
+    libxml2.dumpMemory()