scripts: recognize the "q", "s" and "S" actions/modifiers in ar-lib

scripts: recognize the "q", "s" and "S" actions/modifiers in ar-lib

* lib/ar-lib: Implement the "q" (quick) action as a synonym
for "r" (replace).  Ignore "s" (symbol index) and "S" (no symbol
index) when used as modifiers and "s" when used as a command,
there is simply no way for Microsoft lib to not update the
symbol table index in the archive.
(scriptversion): Update.
* tests/ar-lib.test: Check the added behavior.  Also add checks
for the recently added "u" (update) and "v" (verbose) modifiers.