Pairwise bootstrap works well with lc but not lp, so removed from
default - it is adding pivoting by default that renders the test
robust over previous incarnation (0.50-1)
Added warning about pairwise and multivariate ll
Rescaling bootstrap residuals in addition to recentering them so that
they have the same scale under the null as under the alternative (can
cause issues with pivot=FALSE)
initial work to properly support na.exclude for densities, conditional densities and regressions.
(na.exclude) distributions + conditional distributions
final round of na.action changes
fixed regression in the new conditional density/distribution routine
Merge branch 'master' into npRmpi

Conflicts:
	DESCRIPTION
	vignettes/np_faq.Rnw