- Convert finance/ to new USES=python

Approved by:	portmgr (implicit)
Allow devel/powerpc64-gcc to be used to target non-FreeBSD ports.

 * The format extension patch should only be used on FreeBSD.
 * The name of the target may not follow the portbld scheme.

Differential Revision:	https://reviews.freebsd.org/D972
Approved by:	bapt
New port devel/arm-none-eabi-binutils for ARM bare metal programming.

Differential Revision:	https://reviews.freebsd.org/D973
Approved by:	bapt
- Convert games/ to new USES=python

Approved by:	portmgr (implicit)
- Convert ports of irc/ and lang/ to new USES=python

Approved by:	portmgr (implicit)
- Convert ports of misc/ to new USES=python

Approved by:	portmgr (implicit)