Patch AGL's tool for non-base64, and split long lines.
Update to reflect move to net/http.

In https://codereview.chromium.org/12680003, the JSON and .certs file
was moved to net/http. This change updates the header guard to reflect
that.
Split host strings in header file.

Since the hosts are stored in DNS wire format (with length-prefixed
labels), any labels that start with a digit cause an escape like
"\0071..." (that's length=7, first byte of the label = "1"). But this
causes a warning in Visual Studio and breaks the build.

This change splits the length bytes from the labels so that this warning
doesn't happen.