cosmetics: fix few innocuous typos

cosmetics: fix few innocuous typos

Most of these were found using Lucas De Marchi's 'codespell' tool.

* ChangeLog: Fix minor typos.
* ChangeLog.2: Likewise.
* README.Amiga: Likewise.
* TODO.private: Likewise.
* function.c: Likewise.
* glob/glob.h: Likewise.
* job.c: Likewise.
* main.c: Likewise.
* readme.vms: Likewise.
* remake.c: Likewise.
* tests/ChangeLog: Likewise.
* tests/NEWS: Likewise.
* tests/README: Likewise.
* tests/scripts/variables/private: Likewise.
* vmsdir.h: Likewise.
* signame.c: Likewise.  While at it, improve line wrapping in the
touched comment.

Copyright-paperwork-exempt: yes
Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>