Tru64 re-enabled for intrusive to try to solve remaining issues

[SVN r40082]

status/explicit-failures-markup.xml

@@ -1641,7 +1641,6 @@
             <toolset name="gcc-3.2*"/>
             <toolset name="gcc-3.3*"/>
             <toolset name="mipspro"/>
-			<toolset name="hp_cxx*"/>
             <note author="Ion Gazta&#241;aga">
                 The compiler does not support features that are essential for the library.
             </note>