Fix detection of libexslt/libxslt

Signed-off-by: François Andriot <francois.andriot@free.fr>

ConfigureChecks.cmake

@@ -53,9 +53,12 @@ if( NOT LIBXML_FOUND )
   tde_message_fatal( "libxml at least 2.6.0 is required, but not found on your system" )
 endif( NOT LIBXML_FOUND )
 
-pkg_search_module( LIBXSLT libxslt>=1.0.19 )
+pkg_search_module( LIBXSLT libexslt>=0.8.0 )
 if( NOT LIBXSLT_FOUND )
-  tde_message_fatal( "libxslt at least 1.0.19 is required, but not found on your system" )
+  pkg_search_module( LIBXSLT libxslt>=1.0.19 )
+  if( NOT LIBXSLT_FOUND )
+    tde_message_fatal( "libxslt at least 1.0.19 is required, but not found on your system" )
+  endif( )
 endif( NOT LIBXSLT_FOUND )
 
 pkg_search_module( TAGLIB taglib )