editors/emacs:

• Clarify LICENSE, as it's "or any later version" clause
• Switch to CONFLICTS_INSTALL, as conflicts only happen on install
• Finish OPTIONS helpers conversion
• Convert patch-sources.el to SUB_FILES
• Convert *FLAGS to USES=localbase
• Convert IGNORE and SOUND to _IMPLIES
• Drop DBUS_PTHREAD_LIBS after ports r382294
• Drop default WRKSRC
• Drop clang workaround for unsupported FreeBSD versions

editors/emacs-nox11:

• Kill EMACS_NO_X11_SLAVE in favour of ?= variables
• Conflict with any EMACS_VER

PR: 208217
Submitted by: jbeich