file-truename now uses realpath for local files

This uses fewer syscalls on GNU/Linux and other GNUish platforms.
* lisp/files.el (file-truename): Try fileio--truename
if there are no handlers.
* src/fileio.c: Include stdlib.h, for realpath.
(Ffileio__truename): New function.
1 job for master in 90 minutes and 1 second (queued for 4 seconds)
Status Job ID Name Coverage
failed #3214


Name Stage Failure
test-all Test The script exceeded the maximum execution time set for the job
make -C test check-expensive
make[1]: Entering directory '/builds/emacs/emacs/test'
rm -f ./*.tmp
make[2]: Entering directory '/builds/emacs/emacs/test'
make[3]: Entering directory '/builds/emacs/emacs/test'
ELC lisp/net/tramp-tests.elc
GEN lisp/net/tramp-tests.log
Pulling docker image gitlab/gitlab-runner-helper:x86_64-d0b76032 ...
ERROR: Job failed: execution took longer than 1h30m0s seconds