[$] Development statistics for 6.12

Linus Torvalds released
the 6.12 kernel on November 17, as expected. This development
cycle, the last for 2024, brought 13,344 non-merge changesets into the
mainline kernel; that made it a relatively slow cycle from this
perspective, but 6.12 includes a long list of significant new features.
The time has come to look at where those changes came from, and to look at
the year-long LTS cycle as well.