module for escaping clang arguments on the command line and put them into files

`type style````=`

`|` `EscapedDoubleQuotes` | (** the arguments should be enclosed in "double quotes" and are already escaped *)
`|` `SingleQuotes` | (** the arguments should be enclosed in 'single quotes' and have to be escaped *)
`|` `EscapedNoQuotes` | (** the arguments should not be enclosed in quotes and are already escaped *)

``

quoting style of the arguments

`val quote : style ‑> string ‑> string`
`val mk_arg_file : string ‑> style ‑> string list ‑> string`