*/*: Remove expired ports:

2020-12-31 lang/pypy3: Uses Python 2.7 which is EOLed upstream
2020-12-31 lang/pypy: Uses Python 2.7 which is EOLed upstream
2021-06-23 databases/pypy-gdbm: Uses EOL Python 2.7 via lang/pypy
2021-06-23 databases/pypy-sqlite3: Uses EOL Python 2.7 via lang/pypy
2021-06-23 x11-toolkits/pypy-tkinter: Uses EOL Python 2.7 via lang/pypy

Remove # $FreeBSD$ from Makefiles.

Mark ports recursively depending on Python 2.7 for expiration on June 23.

For ports optionally dependending on Python 2.7, just mark those options
as expired. Remove konquerer from the x11/kde-baseapps metaport and bump
its PORTREVISION.

Submitted by:	rene
Reviewed by:	portmgr, adridg, ehaupt, lme, madpilot, pizzamig, se, sunpoet, yuri
Approved by:	portmgr
Differential Revision:	https://reviews.freebsd.org/D28665

lang/pypy(3): update to 5.10, add flavors to ancillary ports

 - Consistently use DISTVERSION instead of PORTVERSION (the former is set, not
the latter)
 - Only depend on libunwind on x86 arch with FreeBSD >= 11 (fixes ignored build
on arm/ppc)
 - Fix python dependency with depreciation of python meta ports
 - Remove PYPY_BITS from pkg-plist target, no longer used
 - Remove setting of PORTVERSION, DISTVERSION is set in bsd.pypy.mk
 - bsd.pypy.mk:
   - Define DISTVERSION once, to ensure consistency
   - PYPY_DIR: Handle versions with multiple digits
   - PYPY_CFFI_VER now differs in value between pypy and pypy3
 - bsd.pypy.cffi.mk:
   - Add FLAVORS for pypy and pypy3 [1]
   - Consistently use PYTHON_IMPL instead of the hard coded "pypy"
   - PLIST_FILES: use direct substitution instead of PLIST_SUB

Approved by:		portmgr (mat) [1]
Differential Revision:	https://reviews.freebsd.org/D13675

lang/pypy: unbreak build on i386 and armv6

 - Add back PYPY_BITS as it is required to define the names of two files,
   depending if pypy is translated for 32 or 64 bit systems [1].
 - Change maintainership to python@ [2][3][4]

Reported by:	pkg-fallout [1]
Approved by:	koobs@ [2]
PR:		204743 [3]
Submitted by:	robak@ [4]

lang/pypy: update to 2.6.1

Changes:
 - Add external cffi ports (a la python):
   - databases/pypy-gdbm
   - databases/pypy-sqlite3
   - x11-toolkits/pypy-tkinter
 - Add bsd.pypy.mk for consistency between pypy ports.
 - Add bsd.pypy.cffi.mk for consistency with external cffi ports.
 - Switch back to using $PREFIX/pypy-X.Y (the '-' separator is required to
   differentiate between lang/pypy and lang/pypy3)
 - Remove all patches (upstreamed, see announcement below)

ChangeLog:
 - Bug Fixes