Support for non-standard mono installation path

[puremourning]

Due to various version compatibilities and standard server builds I was not able to get a system mono installation on RHEL 6 which can support OmniSharpServer.

So, following the instructions on mono's web page I built mono from source and installed it in a custom location (e.g. $HOME/opt/mono). However, OmniSharpServer was unable to start. This is because OmniSharpServer contains hard-coded paths to search.

I have a local modification to Project::FindAssembly this which checks for the presence of a hierarchy of environment variables (OMNISHARP_LIBRARY_PATH, LD_LIBRARY_PATH,DYLIB_FALLBACK_LIBRARY_PATH) and appends a series of suffixes (mono/4.5, mono/4.0, etc.) to search for the requested assembly. This allowed me to use mono in a non-standard path by following the instructions on mono's website (they suggest setting LD_LIBRARY_PATH).

Has this come up before? Would you be interested in this as a pull request?

[nosami]

Yes, it has come up before, and yes, I would be interested in a pull request!!

Bear in mind though that this project is almost obsolete (to be replaced with https://github.com/OmniSharp/omnisharp-roslyn). I think your problem isn't an issue there.