wrapfig.sty moved, extra documentation

[Robin Fairbairns]

i suggested to donald arseneau that i should move wrapfig.sty to a
directory of its own, and add to it a copy of his recipe for multiple-
column inserts using wrapfig; he agreeed, and supplied a copy of his
latest version of the recipe.

i have now made the change: the new directory is
macros/latex/contrib/supported/wrapfig

the new directory will propagate to the other servers in due course.

Robin Fairbairns

For the CTAN team