Preliminary commit of unconditional distribution support
basic functionality implemented
added untested wrapper functions providing preliminary support for plotting the distributions
tweaked the scale factor calculations for distribution bandwidths
I created a 'distribution' branch to track my distribution-related modifications
to the C/R backend/frontend. The C stuff is mostly broken at the moment.
Merge branch 'master' of https://github.com/JeffreyRacine/R-Package-np
updating to latest master version
Merge branch 'master' into distribution
preliminary support for distribution bandwidth search (npudistbw)
fast.cdf switch added, along with fast cdf cv algorithm
gdat / gdata interface added for distribution bw selection