[m-rev.] Bugfix and new option

[Julien Fischer]

On Mon, 16 Aug 2004, Ralph Becket wrote:

> Estimated hours taken: 1
> Branches: main
>
...
>
> Add a `--version' option to the compiler.
>
> compiler/handle_options.m:
> 	Add display_compiler_version/2 and make usage/2 use it.
>
> compiler/mercury_compile.m:
> 	Add code to handle the `--version' option.
> 	Fix a bug by ensuring the IO state globals field is initialised
> 	before it is read.
>
> compiler/options.m:
> 	Add the `--version' option.
>
It's probably worth adding a `--version' option to mdb, mprof etc for the
sake of consistency.

Julien.
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