Fix signature problem (#26)

* Fix signature problem

* Properly require EPG

* Ensure package-gnupghome-dir is set in older versions of Emacs

* Use GnuPG CLI directly

* Move some stuff around

* Insert fresh key and use its full length id

* Specify keyserver

* Maybe this works?

* Maybe this?

* Just ignore signatures

elisp-check.el

@@ -206,7 +206,8 @@ documentation on the usage of PREFIX and KNOWN-BUFFERS."
     (dolist (package packages)
       (elisp-check-log "Installing: %s" package)
       (elisp-check-condition-case error
-          (package-install package)
+          (let ((package-check-signature nil))
+            (package-install package))
         (error
          (push (elisp-check-format-error error) errors))))
     (when errors