Add *.inc as possible header files to install, pool library has some of those. Fixes SF issue #951106 .

[SVN r22776]

Jamfile

@@ -190,7 +190,7 @@ if $(lib-sources)
 stage $(include-locate:D=)/boost-$(version-tag)
     :
         [ glob-tree $(BOOST_ROOT)/boost/compatibility/cpp_c_headers : c* ]
-        [ glob-tree $(BOOST_ROOT)/boost : *.hpp *.ipp *.h ]
+        [ glob-tree $(BOOST_ROOT)/boost : *.hpp *.ipp *.h *.inc ]
     :
         <locate>$(include-locate:D)
         <tree-subdirs>$(BOOST_ROOT)