Fixed a bug in bruteForceGenerateZeroes.m where it missed a few zeroes.  This caused a cascade of fixes that had to be made to ultimately fix besselzero.m.  Here is the summary:

1.  Fixed bruteForceGenerateZeros.m
2.  changed the costFunction.m to better model the correct zeroes found in step 1.  This was needed once I noticed that developGuessEquation.m no longer worked correctly.
3.  Used the new equation to update the guesses in besselzero.m.  Then instead calculating a fixed distance between zeroes, I changed the algorithm to update the rootspacing after finding every new zero.  This seem to fix any problems with besselzero.

More testing is needed.

Signed-off-by: Jason Nicholson <jashale@yahoo.com>