app-editors/emacs: Identical revbump.

Stable revbump to emacs-25.3-r4, since the fix for sparc of bug 647238
will cause a tiny code change for 32 bit arches with USE=wide-int.

Package-Manager: Portage-2.3.24, Repoman-2.3.6

diff --git a/app-editors/emacs/emacs-25.3-r3.ebuild b/app-editors/emacs/emacs-25.3-r4.ebuild
similarity index 100%
rename from app-editors/emacs/emacs-25.3-r3.ebuild
rename to app-editors/emacs/emacs-25.3-r4.ebuild