XDS analysis should include files with numeric extension

[wfenrich]

It turns out that files having numeric extension may be correct images in binary format.

Example: ZD-3_Pn7.0001

More general approach: fileName.xxxx...

Where xxxx... stands for an undetermined number of digits.

Currently when we try to determine the correct path for generate_XDS.INP, we take into consideration only files with selected extensions with digits just before the last dot.

We should also include cases as described above and 1) fetch such files and 2) include them when determining path for generate_XDS.INP.