This patch finishes off the general tweaks we've made to the manual 
clarifying aspects of tracepoint behavior.

Stan

2010-03-29  Stan Shebs  <stan@codesourcery.com>
        Nathan Sidwell  <nathan@codesourcery.com>

    * gdb.texinfo (GDB/MI Tracepoint Commands): Add notes about the
    GDBN equivalent.
    (Set Tracepoints): Remove mention that conditional tracepoints
    don't exist.
    (Tracepoint Actions): Clarify when while-stepping collection
    happens, note that while-stepping does not automatically collect
    $pc.