app-editors/emacs: Live ebuilds copied from app-editors/emacs-vcs.

app-editors/emacs: Live ebuilds copied from app-editors/emacs-vcs.

The package split between app-editors/emacs for regular ebuilds and
app-editors/emacs-vcs for live ebuilds has outlived its usefulness,
and it entails additional maintenance effort to keep the two packages
(e.g., the list of their use flags in metadata.xml) synchronised.

Therefore, consolidate all GNU Emacs ebuilds in a single package.
The separate app-editors/emacs-vcs package will be removed soon.

Bug: https://bugs.gentoo.org/291296
Package-Manager: Portage-2.3.81, Repoman-2.3.20
Signed-off-by: Ulrich Müller <ulm@gentoo.org>