Vendored packages are internally renamed with a "vendor/" prefix
to preserve the invariant that all packages have distinct paths.
This is necessary to avoid compiler and linker conflicts. Adding
a "vendor/" prefix also maintains the invariant that standard
library packages begin with a dotless path element.

The module requirements of std and cmd do not influence version

pkg syscall (freebsd-arm64), const IFF_DRV_RUNNING = 64
pkg syscall (freebsd-arm64), const IFF_DRV_RUNNING ideal-int
pkg syscall (freebsd-arm64), const IFF_DYING = 2097152
pkg syscall (freebsd-arm64), const IFF_DYING ideal-int
pkg syscall (freebsd-arm64), const IFF_LINK0 = 4096
pkg syscall (freebsd-arm64), const IFF_LINK0 ideal-int
pkg syscall (freebsd-arm64), const IFF_LINK1 = 8192

For the remaining programs,
we define a new GODEBUG setting that
allows individual programs to opt back in to the old behavior.
A GODEBUG setting may not be added if doing so is infeasible,
but that should be extremely rare.

GODEBUG settings added for compatibility will be maintained
for a minimum of two years (four Go releases).
Some, such as `http2client` and `http2server`,

pkg syscall (freebsd-riscv64), const IFF_DRV_RUNNING = 64 #53466
pkg syscall (freebsd-riscv64), const IFF_DRV_RUNNING ideal-int #53466
pkg syscall (freebsd-riscv64), const IFF_DYING = 2097152 #53466
pkg syscall (freebsd-riscv64), const IFF_DYING ideal-int #53466
pkg syscall (freebsd-riscv64), const IFF_LINK0 = 4096 #53466
pkg syscall (freebsd-riscv64), const IFF_LINK0 ideal-int #53466