Re: master bf7041a: Centralize subprocess creation in a single function.

[Paul Eggert]

By the way, after my recent cleanups for the Gnulib merge I'm still 
running into problems running parallel 'make check' on Fedora 33 and on 
Ubuntu 20.10. Plain 'make check' works, but 'make -j4 check' hangs. 
'top' reports:

    PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ 
COMMAND
1858899 eggert    20   0  373536  33016  20968 R 100.0   0.4   2:18.83 
emacs
1858163 eggert    20   0  440044  99836  21144 R  99.7   1.2   2:21.01 
emacs
1860091 eggert    20   0  378844  38580  21200 R  99.7   0.5   2:11.89 
emacs
1862421 eggert    20   0  489052 142108  21568 R  99.0   1.7   0:17.66 
emacs

'ps -ejH' reports:

    PID    PGID     SID TTY          TIME CMD
1858162 1854607 1781976 pts/4    00:00:00                   sh
1858163 1854607 1781976 pts/4    00:02:48                     emacs
1859170 1859170 1859170 ?        00:00:00                       gpg2 
<defunct>
1858898 1854607 1781976 pts/4    00:00:00                   sh
1858899 1854607 1781976 pts/4    00:02:46                     emacs
1859249 1859249 1859249 ?        00:00:00                       gpg2 
<defunct>
1860090 1854607 1781976 pts/4    00:00:00                   sh
1860091 1854607 1781976 pts/4    00:02:39                     emacs
1860174 1860174 1860174 ?        00:00:00                       gpg2 
<defunct>
1862420 1854607 1781976 pts/4    00:00:00                   sh
1862421 1854607 1781976 pts/4    00:00:44                     emacs
1862429 1862429 1862429 ?        00:00:00                       bash 
<defunct>
...
1833188 1833188 1833188 ?        00:00:00   gpg-agent
1833497 1833497 1833497 ?        00:00:00   gpg-agent
1833690 1833690 1833690 ?        00:00:00   gpg-agent
1841465 1841465 1841465 ?        00:00:00   gpg-agent
1842132 1842132 1842132 ?        00:00:00   gpg-agent
1859145 1859145 1859145 ?        00:00:00   gpg-agent
1859215 1859215 1859215 ?        00:00:00   gpg-agent


I suspect the subprocess creation changes mentioned in this thread's 
subject line, though I haven't investigated further. Plus, I'm not sure 
why tests would be running GPG connected to my gpg-agent - isn't that 
going a bit far for 'make check'?