Remove vestigial RMS man page reference
Corrections to advanced reservation logic with overlapping jobs.

This might have worked fine for core reservations or when there
are sufficient idle nodes to use, the the select_g_resv_test()
function clears the node bitmap for nodes that it can not use
and the reservation create logic did not restore that bitmap
after a failed resource selection attempt. This logic restores
the node bitmap on a failed call to select_g_resv_test() so we
can add nodes to the bitmap of available nodes rather than having
it repeatedly cleared.
The logic also adds some performance enhancements that I will
add to in the next commit.
Add _DEBUG parameter to reservation module

This makes it simpler to enable detailed debugging for reservations.
This includes more information than we probably want to see with
the DebugFlag=reservation and would be only for developer debugging