Added aflpCombine function
Lowered the magic number in fsaRGbin from 0.05 to 0.01. There is an edge
case that arises when a bin boundary is set between two very close
fragments. If the fragments are closer than 1/2 this magic number, and
there is only one fragment on one side of the new boundary, you may end
up with no fragments in a bin. This is not good. Setting this to 0.01
reduced the possibility of this problem, but does not eliminate it!
Did some generally ineffective optimizations. Note that the most
expensive code is the call to lm() in set.ladder. Tried to parallelize
it, but reverted the key bits of code as they don't seem to provide
consistent benefit, at least on a dual core machine.
Started reworking the code to use the gWidgets package, which looks fantastic!!