Fix hmac issues for Emacs 24 and 25
Fix hmac issues for Emacs 24 and 25

abingham/emacs-ycmd,phst/emacs-ycmd,ptrv/emacs-ycmd,phst/emacs-ycmd,phst/emacs-ycmd,ptrv/emacs-ycmd,ptrv/emacs-ycmd,phst/emacs-ycmd,emacsmirror/ycmd,ptrv/emacs-ycmd,emacsmirror/ycmd,abingham/emacs-ycmd,emacsmirror/ycmd,emacsmirror/ycmd,phst/emacs-ycmd,abingham/emacs-ycmd,emacsmirror/ycmd,abingham/emacs-ycmd,abingham/emacs-ycmd,emacsmirror/ycmd,ptrv/emacs-ycmd,abingham/emacs-ycmd,phst/emacs-ycmd,ptrv/emacs-ycmd