* .gitignore: Don't ignore .rej files

Left over rejected hunks that we forgot to merge by hand should not be
silently ignored.  Better explicitly remove/rename .rej files when
done with them.
1 job for master in 59 minutes and 32 seconds (queued for 2 seconds)
Status Job ID Name Coverage
failed #4004


Name Stage Failure
test-all Test
Makefile:319: recipe for target 'check-doit' failed
make[2]: *** [check-doit] Error 1
make[2]: Leaving directory '/builds/emacs/emacs/test'
Makefile:294: recipe for target 'check-expensive' failed
make[1]: *** [check-expensive] Error 2
make[1]: Leaving directory '/builds/emacs/emacs/test'
Makefile:959: recipe for target 'check-expensive' failed
make: *** [check-expensive] Error 2
ERROR: Job failed: exit code 1