move/change comment to be in more appropriate place
diag of list now compatible with R-3.1.0
improved doc for diag
document use.names for c
document NA/NaN issue in help(Arithmetic)
Merge branch '19-doc' into 20
Merge branch '19-mods' into 20
tweak help(c)
copyright update
mods update
Merge branch '19-doc' into 20
doc tweaks for helpers
document R_SEED in EnvVar.Rd
Merge branch '19-doc' into 20
Merge branch '19-mods' into 20
removed incorrect info from help(Memory)
Merge branch '19-doc' into 20