libc/siglist: Oops, CKPTX should be CKPTEXIT.

libc: Make the signal name array uppercase.

This is to satisfy POSIX which requires that the string printed by
'kill -l <signal number>' shall be the name of the symbolic constant
(for example, SIGK

libc: Make the signal name array uppercase.

This is to satisfy POSIX which requires that the string printed by
'kill -l <signal number>' shall be the name of the symbolic constant
(for example, SIGKILL) without the 'SIG' part.

This also fixes a number of sh(1) tests.

While here, sync a bit further with FreeBSD. Specifically, use
C99 designated initialization.

Taken-from: FreeBSD

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kernel - Add PROC_PDEATHSIG_CTL and PROC_PDEATHSIG_STATUS

* Add PROC_PDEATHSIG_CTL and PROC_PDEATHSIG_STATUS to procctl(2).

This follows the linux and freebsd semantics, however it should be note

kernel - Add PROC_PDEATHSIG_CTL and PROC_PDEATHSIG_STATUS

* Add PROC_PDEATHSIG_CTL and PROC_PDEATHSIG_STATUS to procctl(2).

This follows the linux and freebsd semantics, however it should be noted
that since the child of a fork() clears the setting, these semantics have
a fork/exit race between an exiting parent and a child which has not
yet setup its death wish.

* Also fix a number of signal ranging checks.

Requested-by: zrj

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libc: Sync wordexp(3) with FreeBSD.

I went and changed freebsd_wordexp() to wordexp2(), though.

Taken-from: FreeBSD

libc: Hide some internal symbols.

Taken-from: FreeBSD

libc & libkvm: Fix wrong calculations in getloadavg() functions.

41ca9afb26bd2f0654acb8462f6abe441e329f80 changed the ldavg field of
struct loadavg to an array of __uint64_t from previously fixpt_t

libc & libkvm: Fix wrong calculations in getloadavg() functions.

41ca9afb26bd2f0654acb8462f6abe441e329f80 changed the ldavg field of
struct loadavg to an array of __uint64_t from previously fixpt_t
which is __uint32_t.

Adjust two associated nelem calculations to use __uint64_t as well.

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libc/getdate: Add getdate_err to the Symbol.map too.

Seems lang/clisp picks up getdate().

Reported-by: zrj

__realpath.2: Fix typo.

libc/dlfcn: Move build_phdr_info()'s attribute to the declaration.

libc/locale: Remove some redundant redeclarations of __mb_sb_limit.

We already get an extern declaration from <ctype.h> (via <wchar.h>).

libc/sys : add SIGCKPT and SIGCKPTEXIT to sigaction(2) manual page

libc/gen : display the table properly in signal(3) manual page

libc/sys : display the table properly in sigaction(2) manual page

Taken-from: FreeBSD (r306496)

libc/asmcontext: Fix building with -fno-common.

asmcontext.h generation using genassym.sh isn't working properly with
-fno-common, so for now just specify -fcommon at the end of the flags.

Right no

libc/asmcontext: Fix building with -fno-common.

asmcontext.h generation using genassym.sh isn't working properly with
-fno-common, so for now just specify -fcommon at the end of the flags.

Right now this is only needed for testing -fno-common because it is
not GCC's default yet.

This concludes the work to make buildworld succeed with -fno-common.

Thanks to Krzysztof Piecuch for helping with it.

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libc/asmcontext: Remove unneeded ASSYM()s.

libc/strxfrm: Remove an unneeded declaration.

The prototype comes in by including <string.h>.

libc: Fix building with -fno-common.

-fno-common will be default in future compilers (GCC 10, for example).