pem: print \n after 1 header line too rearrange to make reason for if clear.
pem: print \n after 1 header line too
rearrange to make reason for if clear.

Fixes issue 911.

R=agl1
CC=golang-dev
http://codereview.appspot.com/1774044
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go