New 2021Q4 branch

Hi,

The 2021Q4 branch has been created. It means that the next update on the
quarterly packages will be on the 2021Q4 branch.

A lot of things happened in the last three months:
- pkg 1.17.2
- New USES:angr, mlt
- Default version of FPC switched to 3.2.2
- Default version of GL switched to mesa-libs
- Default version of LAZARUS switched to 2.0.12 or 2.3.0 for DEVEL
- Firefox 93.0
- Firefox-esr 78.15.0
- Chromium 92.0.4515.159
- Ruby 2.6.8, 2.7.4, 3.0.2

Next quarterly package builds will start on Tuesday October 5 at 1:00AM UTC and
should be available on your closest mirrors few days later.

For those stat nerds out there, here's what happened during the last 3 months on head:
Number of commits: 9833
Number of committers:      148
Most active committers:
2982 sunpoet_at_FreeBSD.org
 924 decke_at_FreeBSD.org
 712 yuri_at_FreeBSD.org
 673 jbeich_at_FreeBSD.org
 235 nc_at_FreeBSD.org
 229 tcberner_at_FreeBSD.org
 177 ygy_at_FreeBSD.org
 169 danfe_at_FreeBSD.org
 142 pkubaj_at_FreeBSD.org
 125 lwhsu_at_FreeBSD.org
Diffstat: 16387 files changed, 358053 insertions(+), 292049 deletions(-)

and on the 2021Q3 branch:
Number of commits: 743
Number of committers:       54
Most active committers:
 330 jbeich_at_FreeBSD.org
  31 decke_at_FreeBSD.org
  28 krion_at_FreeBSD.org
  28 kai_at_FreeBSD.org
  27 kbowling_at_FreeBSD.org
  22 cmt_at_FreeBSD.org
  21 yuri_at_FreeBSD.org
  17 tcberner_at_FreeBSD.org
  16 otis_at_FreeBSD.org
  16 lwhsu_at_FreeBSD.org
2196 files changed, 25929 insertions(+), 26855 deletions(-)

Regards,
René