FreeBSD/doc 780d0a3 (r53422)en_US.ISO8859-1/books/porters-handbook/versions chapter.xml, en_US.ISO8859-1/htdocs/releases/12.1R schedule.xml

- Update the 12.1-RELEASE schedule to reflect releng/12.1 had branched,
  and the BETA1 builds are in flight.
- Document __FreeBSD_version numbers 1201000 and 1201500.
- Add releng/12.1 to the list of branches in the releng page.

Approved by:    re (implicit)
Sponsored by:   Rubicon Communications, LLC (Netgate)
DeltaFile
+15-0en_US.ISO8859-1/books/porters-handbook/versions/chapter.xml
+7-0en_US.ISO8859-1/htdocs/releng/index.xml
+2-2en_US.ISO8859-1/htdocs/releases/12.1R/schedule.xml
+24-23 files

UnifiedSplitRaw

FreeBSD/doc 53422b0 (r50412)en_US.ISO8859-1/books/porters-handbook/versions chapter.xml

Document __FreeBSD_version 1101000 and 1101500.

Sponsored by:   The FreeBSD Foundation
DeltaFile
+16-0en_US.ISO8859-1/books/porters-handbook/versions/chapter.xml
+16-01 files

UnifiedSplitRaw