kill: print --table as vertical

[m-haisham]

Issue #6202

Table (-L) format is wrong

Should be an actual table, not a grid

--- STDOUT_GNU	2024-04-07 19:12:25.820911283 +0200
+++ STDOUT_UUTILS	2024-04-07 19:12:25.824911280 +0200
@@ -1,62 +1,5 @@
- 1 HUP      Hangup
- 2 INT      Interrupt
- 3 QUIT     Quit
- 4 ILL      Illegal instruction
- 5 TRAP     Trace/breakpoint trap
- 6 ABRT     Aborted
- 7 BUS      Bus error
- 8 FPE      Floating point exception
- 9 KILL     Killed
-10 USR1     User defined signal 1
-11 SEGV     Segmentation fault
-12 USR2     User defined signal 2
-13 PIPE     Broken pipe
-14 ALRM     Alarm clock
-15 TERM     Terminated
-16 STKFLT   Stack fault
-17 CHLD     Child exited
-18 CONT     Continued
-19 STOP     Stopped (signal)
-20 TSTP     Stopped
-21 TTIN     Stopped (tty input)
-22 TTOU     Stopped (tty output)
-23 URG      Urgent I/O condition
-24 XCPU     CPU time limit exceeded
-25 XFSZ     File size limit exceeded
-26 VTALRM   Virtual timer expired
-27 PROF     Profiling timer expired
-28 WINCH    Window changed
-29 POLL     I/O possible
-30 PWR      Power failure
-31 SYS      Bad system call
-34 RTMIN    Real-time signal 0
-35 RTMIN+1  Real-time signal 1
-36 RTMIN+2  Real-time signal 2
-37 RTMIN+3  Real-time signal 3
-38 RTMIN+4  Real-time signal 4
-39 RTMIN+5  Real-time signal 5
-40 RTMIN+6  Real-time signal 6
-41 RTMIN+7  Real-time signal 7
-42 RTMIN+8  Real-time signal 8
-43 RTMIN+9  Real-time signal 9
-44 RTMIN+10 Real-time signal 10
-45 RTMIN+11 Real-time signal 11
-46 RTMIN+12 Real-time signal 12
-47 RTMIN+13 Real-time signal 13
-48 RTMIN+14 Real-time signal 14
-49 RTMIN+15 Real-time signal 15
-50 RTMAX-14 Real-time signal 16
-51 RTMAX-13 Real-time signal 17
-52 RTMAX-12 Real-time signal 18
-53 RTMAX-11 Real-time signal 19
-54 RTMAX-10 Real-time signal 20
-55 RTMAX-9  Real-time signal 21
-56 RTMAX-8  Real-time signal 22
-57 RTMAX-7  Real-time signal 23
-58 RTMAX-6  Real-time signal 24
-59 RTMAX-5  Real-time signal 25
-60 RTMAX-4  Real-time signal 26
-61 RTMAX-3  Real-time signal 27
-62 RTMAX-2  Real-time signal 28
-63 RTMAX-1  Real-time signal 29
-64 RTMAX    Real-time signal 30
+ 0 EXIT     1 HUP      2 INT      3 QUIT     4 ILL      5 TRAP     6 ABRT    
+ 7 BUS      8 FPE      9 KILL    10 USR1    11 SEGV    12 USR2    13 PIPE    
+14 ALRM    15 TERM    16 STKFLT  17 CHLD    18 CONT    19 STOP    20 TSTP    
+21 TTIN    22 TTOU    23 URG     24 XCPU    25 XFSZ    26 VTALRM  27 PROF    
+28 WINCH   29 POLL    30 PWR     31 SYS     

This PR changes the --table output to be vertical but does not add the signal descriptions.

[github-actions]

GNU testsuite comparison:

Skipping an intermittent issue tests/tail/inotify-dir-recreate (passes in this run but fails in the 'main' branch)

[tertsdiepraam]

Nice, thanks! Tests look good too. I think this change allows us to simplify a bit more.

[BenWiederhake]

Fixes #6219.

[m-haisham]

The failed test seems to be unrelated to this tool.

[github-actions]

GNU testsuite comparison:

Skipping an intermittent issue tests/tail/inotify-dir-recreate (passes in this run but fails in the 'main' branch)

[cakebaker]

Thanks :)