strconv: document value returned by ParseInt when there is an error Documenting existing behavior; new commentary only. Fixes issue 7105.
strconv: document value returned by ParseInt when there is an error
Documenting existing behavior; new commentary only.
Fixes issue 7105.

LGTM=bradfitz
R=golang-codereviews, bradfitz
CC=golang-codereviews
https://codereview.appspot.com/68840044

pombredanne/go-deleteme,tv42/old-go,tv42/old-go,pombredanne/go-deleteme,tv42/old-go,pombredanne/go-deleteme,tv42/old-go,pombredanne/go-deleteme,tv42/old-go,pombredanne/go-deleteme,tv42/old-go,pombredanne/go-deleteme,pombredanne/go-deleteme,tv42/old-go