[mod_webdav] surround Lock-Token with "<...>"
[mod_webdav] surround Lock-Token with "<...>"

(thx yangfl)

github: #97

x-ref:
  https://github.com/lighttpd/lighttpd1.4/pull/97

gstrauss/lighttpd1.4,lighttpd/lighttpd1.4,lighttpd/lighttpd1.4,gstrauss/lighttpd1.4,gstrauss/lighttpd1.4,lighttpd/lighttpd1.4,gstrauss/lighttpd1.4,lighttpd/lighttpd1.4,gstrauss/lighttpd1.4,lighttpd/lighttpd1.4,gstrauss/lighttpd1.4,lighttpd/lighttpd1.4