File encodings are not all UTF-8

[rsharvey]

ERL: OTP 17.4
Exodm: master

Feel free to ignore this, it was discovered when I was trying to build something with the latest code and OTP version.

There are several files with non utf-8 encodings. In some cases, this just generates an error. In other modules where the "warnings_as_errors" flag is set, it fails the build.

In lhttpc:

ERROR: Failed to extract name from /home/git/feuerlabs/exodm/deps/lhttpc/src/lhttpc.app.src: {27, file_io_server, invalid_unicode}

Just deleting the comment at the top of the file or forcing UTF-8 encoding fixes this.

In yaws:

==> yaws (compile)
--- Will not overwrite /home/rob/git/feuerlabs/exodm/deps/yaws/etc/yaws/yaws.conf
--- Installing local config file at /home/rob/git/feuerlabs/exodm/deps/yaws/etc/yaws/yaws.conf.template
/home/rob/git/feuerlabs/exodm/deps/yaws/src/yaws_xmlrpc.erl:1: Non-UTF-8 character(s) detected, but no encoding declared. Encode the file in UTF-8 or add "%% coding: latin-1" at the beginning of the file. Retrying with latin-1 encoding.
ERROR: compile failed while processing /home/rob/git/feuerlabs/exodm/deps/yaws: rebar_abort
make: *** [compile] Error 1

Also the following files in yaws have different encodings:

/exodm/deps/yaws/src/yaws_jsonrpc.erl
/eoxdm/deps/yaws/src/yaws_rpc.erl