New version of the Query Estimator

[Henrik Nordberg <HNordberg@lbl.gov>]

Hello,

QE now uses a real bitmap index for quick estimates. See CVS for
information about what has changed in each source file.

qe -v will print a lot of information when doing quick estimates. Among
other things, it will print the bin boundaries and the number of events
in each bin.

please report bugs to hnordberg@lbl.gov as usual.

 Thanks, Henrik