Added new function in editmesh_mods.c, "loop multiselect" and can be accessed via the CTRL-E popup menu in editmode. It is used to select multiple edge loops/rings based upon the current selection set. It does this simply by looping through a list of currently selected edges and calls 'edge_loop_select' or 'edge_ring_select' for each one. This can be used to build large selection sets quickly, as can be seen in the following example images...
