acl: rename file

[Bruno Haible]

Hi Jim,

I'm currently writing 3 unit tests for the 'acl' module functionality:
  test-set-mode-acl
  test-copy-acl
  test-file-has-acl

and accordingly I think the file 'acl.c' should be renamed to 'set-mode-acl.c'.
'acl.c' is one particular functionality: it sets ACLs of a particular kind
on files (only ACLs which correspond to file modes). It is not the most 
low-level
part of the module (file-has-acl.c is more low-level), and not the highest-level
part either (copy-acl.c is higher level).

If we someday want a wrapper API which allows access to internals of the ACLs,
independently whether they are POSIX-draft style, or Solaris style, or HP-UX
style, or AIX style, or older AIX style, _that_ should be called acl.c. (With
such a wrapper API the coreutils chmod program could be used to manipulate ACLs
in a platform independent way...)

OK to rename the file?

Bruno

0001-Rename-acl.c-to-set-mode-acl.c.patch
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