Issue 19716 Add MANPATH to activate(.fish)

[bolry]

Add the MANPATH environment variable to both the activate and activate.fish generated scripts in install.sh. Gives access to man pages for, e.g., dmd and dmd.conf.

[dlang-bot]

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Bugzilla references

Auto-close	Bugzilla	Severity	Description
✗	19716	enhancement	activate and activate.fish scripts do not add MANPATH

[wilzbach]

Thanks a lot for your PR, but could you please add a simple test for it? Check travis.sh for details.

[bolry]

Will do. Travis is new to me but I'll have a look.

[wilzbach]

It's basically just one big shell script which we run in the CI. Let me know if you need help.

[bolry]

Seemingly I need some ideas about the travis runtime environment to check it. Maybe man isn't available?

[wilzbach]

I presume LDC just doesn't come with a man page or has it somewhere else?

[bolry]

I've changed to only add MANPATH for dmd compilers.

[AndrewEdwards]

@bolry Request review and resolution of any conflicts associated with this pull request. Let's whip this in shape for merger.

[AndrewEdwards]

@wilzbach, I doubt @bolry is with us anymore. Do you mind taking over and seeing this to completion?