sync: explain Pool's intentions Expand the type's doc comment to make its purpose clear and discourage misuse.
sync: explain Pool's intentions
Expand the type's doc comment to make its purpose clear
and discourage misuse.

R=golang-codereviews, gobot, rsc
CC=golang-codereviews
https://codereview.appspot.com/44680043

apparentlymart/golang,apparentlymart/golang,apparentlymart/golang,apparentlymart/golang,apparentlymart/golang,apparentlymart/golang,apparentlymart/golang