relax SVN archive

Fix for the nasty bug #20756 (https://gna.org/bugs/?20756).

The problem was that the global execution lock was not always released by a relax script when
certain errors are raised during the script execution. This does not occur for all types of error
though. Now the release of the lock has been shifted into the 'finally' statement to absolutely
force lock release.

Elimination of the relax_disp.calc_r2eff user function.

This user function, which is non-functional anyway, is not needed. The calculation of the R2eff
values will occur with the optimisation of the 'R2eff' model (with a call to the calc user function
for the fixed time period experiment types) so direct calculation through a specific user function
is not needed.

Elimination of the relax_disp.cpmg_delayT user function.

This user function is not necessary as the relax_disp.relax_time user function serves the same
purpose. The use of relax_disp.relax_time instead allows for code sharing between the fixed and
variable time period relaxation dispersion experiment types.

Merged revisions 19568-19569,19571-19573,19577 via svnmerge from
svn+ssh://bugman@.../svn/relax/trunk

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r19568 | bugman | 2013-04-21 23:20:35 +0200 (Sun, 21 Apr 2013) | 5 lines

Unicode is now used for the tau symbol in the model-free model parameter lists in the GUI.

This is only when modifying the models to optimise, which shouldn't be changed anyway.
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r19569 | bugman | 2013-04-21 23:26:59 +0200 (Sun, 21 Apr 2013) | 5 lines

Removed the 'string' from 'Spectrum ID string' in the spectrum list GUI element.

This is a GUI - the word string is meaningless here!
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r19571 | bugman | 2013-04-21 23:29:41 +0200 (Sun, 21 Apr 2013) | 3 lines

The delay times column string now specifies seconds in the spectrum list GUI element.
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r19572 | bugman | 2013-04-21 23:45:00 +0200 (Sun, 21 Apr 2013) | 5 lines

Formatting improvements for the relaxation data list GUI element.

The data type column entries are now descriptive and use subscript.
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r19573 | bugman | 2013-04-21 23:52:08 +0200 (Sun, 21 Apr 2013) | 3 lines

More unicode strings are used for the GUI for subscripts and Greek letters.
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r19577 | bugman | 2013-04-22 00:50:13 +0200 (Mon, 22 Apr 2013) | 5 lines

Fixes for the R1 and R2 GUI analyses for the recently introduced unicode subscript characters.

There is now self.label for a pure string version and self.gui_label for the fancier unicode version.
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Fixes for the R1 and R2 GUI analyses for the recently introduced unicode subscript characters.

There is now self.label for a pure string version and self.gui_label for the fancier unicode version.

More fixed for the peak intensity error analysis method of the relaxation dispersion auto-analysis.

The fixed relaxation time period type experiments can now be handled.

Fixed for the error_analysis() method of the relaxation dispersion auto-analysis.

The method can now handle missing spectrometer field strength data.

Removed the spectrum.error_analysis user function call in the exp_fit.py dispersion system test script.

This is now performed by the auto-analysis.

More unicode strings are used for the GUI for subscripts and Greek letters.

Formatting improvements for the relaxation data list GUI element.

The data type column entries are now descriptive and use subscript.