applied another Python detection patch from Joseph Sacco cleanup the

* configure.in: applied another Python detection patch from Joseph Sacco
* libxml.spec.in: cleanup the changelog section, asciifies the spec file
  too
Daniel
diff --git a/configure.in b/configure.in
index 6951b3d..cb9e0b1 100644
--- a/configure.in
+++ b/configure.in
@@ -678,17 +678,17 @@
 	   -d $with_python/lib/python$PYTHON_VERSION/site-packages
 	then
 	    PYTHON_INCLUDES=$with_python/include/python$PYTHON_VERSION
-	    PYTHON_SITE_PACKAGES='$(libdir)/lib/python$(PYTHON_VERSION)/site-packages'
+	    PYTHON_SITE_PACKAGES=$libdir/python$PYTHON_VERSION/site-packages
 	else
 	    if test -r $prefix/include/python$PYTHON_VERSION/Python.h
 	    then
 	        PYTHON_INCLUDES=$prefix/include/python$PYTHON_VERSION
-		PYTHON_SITE_PACKAGES='$(libdir)/python$(PYTHON_VERSION)/site-packages'
+	        PYTHON_SITE_PACKAGES=$libdir/python$PYTHON_VERSION/site-packages
 	    else
 		if test -r /usr/include/python$PYTHON_VERSION/Python.h
 		then
 		    PYTHON_INCLUDES=/usr/include/python$PYTHON_VERSION
-		    PYTHON_SITE_PACKAGES='$(libdir)/python$(PYTHON_VERSION)/site-packages'
+	            PYTHON_SITE_PACKAGES=$libdir/python$PYTHON_VERSION/site-packages
 		else
 		    echo could not find python$PYTHON_VERSION/Python.h
 		fi
@@ -701,7 +701,7 @@
     fi
     if test "$with_python" != ""
     then
-        pythondir=$(PYTHON_SITE_PACKAGES)
+        pythondir='$(PYTHON_SITE_PACKAGES)'
     else
         pythondir='$(libdir)/python$(PYTHON_VERSION)/site-packages'
     fi