Cosmetic - use C comments instead of C++ comments for recent Ruby change
Work around Octave seg fault on exit in imports testcase on Octave 3.1 and 3.2
Patch fixing warning 322 in rubycontainer_extended

'rubycontainer_extended.swg' generates warnings:

 Warning 322: Redundant redeclaration of 'map_bang',
 Warning 322: previous declaration of 'map_bang'.

The fix is to remove a redundant call to swig_container_extend for
swig::GC_VALUE.

Thanks

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