Improve the PRINT PATH, COMPILE STARS, and TABLE STAR AVAILABLE commands. Add the getFileList() routine.

These commands are improved as follows:

PRINT PATH This command now accepts an optional pattern between double quotes that will be matched against data file names. E.g. the PRINT PATH ".*ascii" will list all the data files with names ending in "ascii". The full path to the data file will be printed, so it can also be used to find the location of a file on the search path.

COMPILE STARS TABLE STAR AVAILABLE These commands work as before, except that now also user-defined SED grids will be included in the output. The old code was not aware of those.

A new routine getFileList() is added that allows data files matching a specified wildcard pattern to be found. The names of the files that match will be returned in a vector. This can make the code more flexible in finding data files.

No milestone has been selected, so we can choose whether we want this for C27 or C25.