This commit rebases my Emacs PKGBUILD on the one used by
`emacs-git'. By default, my compiler will now use the gold linker,
native-compilation, and ahead of time elisp native compilation. It
stills include PDF documentation and xwidgets browser, but removes the
HTML docs.
Recently, the `contrib/' directory of org moved to a different
repository. This broke the previous `emacs-org-mode-git' package. This
commit adds a new PKGBUILD for `emacs-org-mode-git' and adds a
configuration snippet for `org-contrib' in my vanilla Emacs
configuration.