Add mimmutable(2) libc stub, add & adjust manual pages, and crank the minor.
ok kettenis

mincore() is a relic from the past, exposing physical machine information
about shared resources which no program should see. only a few pieces of
software use it, generally poorly thought out. the

mincore() is a relic from the past, exposing physical machine information
about shared resources which no program should see. only a few pieces of
software use it, generally poorly thought out. they are being fixed, so
mincore() can be deleted.
ok guenther tedu jca sthen, others

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Use a Thread Information Block in both single and multi-threaded programs.
This stores errno, the cancelation flags, and related bits for each thread
and is allocated by ld.so or libc.a. This is an

Use a Thread Information Block in both single and multi-threaded programs.
This stores errno, the cancelation flags, and related bits for each thread
and is allocated by ld.so or libc.a. This is an ABI break from 5.9-stable!

Make libpthread dlopen'able by moving the cancelation wrappers into libc
and doing locking and fork/errno handling via callbacks that libpthread
registers when it first initializes. 'errno' *must* be declared via
<errno.h> now!

Clean up libpthread's symbol exports like libc.

On powerpc, offset the TIB/TCB/TLS data from the register per the ELF spec.

Testing by various, particularly sthen@ and patrick@
ok kettenis@

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Wrap shm_open() to go direct and mark shm_{mkstemp,unlink}() as weak

Use PROTO_NORMAL() on __syscall to go direct, adjusting the declaration
to eliminate some casts.
Retire some uses of old-style STUB* macros where superseded by namespace.h bits

tweaks and ok deraadt@