minor tweak to extractor region extension output

Switched the region extension written by extractor back to the XMM convention of REG001##. This works for Chandra because CIAO looks for the HDUNAME='REGION' keyword which is also included.

xspec 12.5

HEAsoft 6.6 which includes xspec v12.5 is now available.

updated xselect Chandra response matrix script

The xselect script xsl_chandra_acis_makeresp made some unwarranted assumptions about DSVAL1 holding the list of selected chips. Generalized this and fixed bug in one of the calls to mkacisrsp where I'd left off an wmap parameter specification. This change will make it into the release coming up this week.

writeFITS.tcl

Jörn Wilms pointed out it would be really useful in xspec to be able to write a bunch of information including best-fit parameters and errors to a single row in a FITS file. I've added a script writeFITS.tcl to do this. It either creates a new file or appends to an existing one. Obviously, this is not a general solution for all the information a user might want to save however it can easily be modified to save additional information.

Band model for GRB spectra

Dick Willingale pointed out that the grbm model has a hard-coded, artificial lower limit of 1 keV on the third (tem) parameter. There is no good reason for this so I have removed it for the upcoming release.

simftest.tcl

Moved the ftest.tcl in manager to simftest.tcl and added it to TclIndex so that it is automatically loaded in xspec and available as the command simftest.