lots of chnages:
- photfilt2: bug in zero point, as I used the wrong wavelength to compute Jy -> Energy. Now, the zero points are consistent with the SVO
- photfilt2: added an XML generator for the Hipparcos Hp filter calibrated by Bessell 2000
- bw2: added the computation of reddening in wide band
- bw2: changed the units of PERIODx in the parameters
- bw2: added the "DELTA PHI MJDxxxx" phase offset
- dpfit: corrected a little bug for the "follow" keyword
- filterTempale.xml: needed to generate filters