json: handle capital floating point exponent (1E100).
json: handle capital floating point exponent (1E100).

When parsing numbers with an exponent (like "12e-1"), the JSON scanner
would only allow a lowercase 'e', while the RFC also allows the
uppercase 'E'.

R=adg
CC=golang-dev, rsc
http://codereview.appspot.com/3986042

Committer: Andrew Gerrand <395a7d33bec8475c9b83b7d440f141bcbd994aa5@golang.org>
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go