Bug fix for the page numbers in the index - these were often out by a few pages.

The makeindex command was being run too early in the repetitive LaTeX compilation chain, causing the
page numbers to be incorrect.  It is now run twice to fix the problem.
Removed the flag for single_spectrum.

Progress sr #3043: (https://gna.org/support/index.php?3043) - support for NMRPipe seriesTab format *.ser.

Troels E. Linnet provided this patch. Commit by: tlinnet _aaattt_ gmail_dot_com

Signed-off-by: Edward d'Auvergne <edward _att_ nmr-relax _dott_ com>
Fixed wrong reference to Sparky format.

Progress sr #3043: (https://gna.org/support/index.php?3043) - support for NMRPipe seriesTab format *.ser.

Troels E. Linnet provided this patch. Commit by: tlinset _aaattt_ gmail_dot_com

Signed-off-by: Edward d'Auvergne <edward _att_ nmr-relax _dott_ com>