[Mono-dev] PR #960: [MWF] Partially implement Help.ShowHelp

[Eberhard Beilharz]

The change in PR #960 partially implements the ability to show a help
file by calling chmsee or whatever the environment variable
MONO_HELP_VIEWER is set to. This is still a partial implementation in
that it probably only works on Linux, but at least IMO it's an
improvement over the existing do-nothing implementation.

This change increases the compatibility with Windows by allowing to use
the same chm file and help calling code in the application on both
Windows and Linux. While this might not be optimal and it might be
better to use a more native format on Linux it allows to port a Windows
application more quickly to Linux.

https://github.com/mono/mono/pull/960

Thanks,
    Eberhard