Fix adding packages that depend on eachother in a non-ASCIIbetical fashion

pkg add fails on packages that don't have dependencies met. Say you have these packages:

A, depends on nothing
B, depends on nothing
C, depends on B
D, depends on E
E, depends on nothing

The current process involves going ASCIIbetically and pkg add'ing them one by one.
In this case, A, B, C, and E would be installed. D would not install because E was
not already installed. By putting them all on the line as arguments, they can be
installed more reliably via pkgng's logic.