Don't check manpages for xsltproc.

Signed-off-by: Bian Naimeng <biannm@cn.fujitsu.com>

--- tdb-1.3.0.orig/wscript	2015-04-22 09:52:32.366000222 +0900
+++ tdb-1.3.0/wscript	2015-04-22 09:51:57.720000205 +0900
@@ -90,7 +90,7 @@ def configure(conf):
         not conf.env.disable_tdb_mutex_locking):
         conf.define('USE_TDB_MUTEX_LOCKING', 1)
 
-    conf.CHECK_XSLTPROC_MANPAGES()
+    conf.find_program('xsltproc', var='XSLTPROC')
 
     if not conf.env.disable_python:
         # also disable if we don't have the python libs installed