Adds Emacs entries to gitignore
Adds Emacs entries to gitignore

Every now and then Emacs create a pesky temporary file within the source tree that should be ignored.

Signed-off-by: Alvaro Lopez Ortega <5b2d0c210c4a9fd6aeaf2eaedf8273be993c90c2@gnu.org>

alobbs/libhpack,http2d/core,http2d/core,alobbs/libhpack,http2d/core,http2d/core,alobbs/libhpack,alobbs/libhpack