1) MATCHING

Matching is further developed. Goodness of spots and goodness thresholds can now be used in matching.
All user function names start with gtMATCH...

2) OPTIMIZATION OF TILTS
Optimization of tilts and detector distance finally works (see help of gtMATCHCorrectGeo) consistently. At least, I tested it on the strain dataset. If it doesn't, you can still plot the 3D cost function and optimize manually.

3) Double threshold SEGMENTATION
Lower and upper limits are added to the double threshold segmentation, so th2 that is used for growing a seed is constrained to remain between a minimum (parameters.seg.th_grow_low) and maximum value (parameters.seg.th_grow_high). They are ignored if left empty. These additional parameters are added to gtSetup as well.

4) Difpot tables
They now have an additional column which will be used in the future to mark and reject bad ones.

5) Determination of Extinction Start/End images (gtDBBlob2SpotTable_WriteDifspots)
It's more elegant involving new parameters (included in gtSetup).

6) Creation of difspots from blobs (gtDBBlob2SpotTable_WriteDifspots)
The difspots written as edf-s are created from the full-s under the blob mask (none/blob2D/blob3D)

git-svn-id: https://svn.code.sf.net/p/dct/code/trunk@46 4c865b51-4357-4376-afb4-474e03ccb993