Updated filename for 1.0 version of Julia.

[krinsman]

It seems that in the latest versions of Julia, juliarc.jl was renamed to startup.jl. So this is a minor patch. https://discourse.julialang.org/t/juliarc-jl-in-julia1-0/14354

This seems kind of self-explanatory but please let me know if I should clarify more of course.

See also: JuliaLang/julia#26161
and https://docs.julialang.org/en/v0.7.0/NEWS/

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[krinsman]

Apparently LOAD_CACHE_PATH was deprecated at some point and replaced with DEPOT_PATH. Anyway references to a nonexistent Base.LOAD_CACHE_PATH were why the first version of this PR failed (as far as I can tell).

JuliaLang/julia#26165
JuliaLang/Compat.jl#527

I imagine this version will fail for different reasons but we'll see.

[krinsman]

1. Looking at startup.jl, it looks like Base.source_path() would evaluate to ${PREFIX}/etc/julia/startup.jl, so that the value of JULIA_PREFIX (the variable in startup.jl) should be ${PREFIX}, and therefore JULIA_PKGDIR would evaluate to:

${PREFIX}/share/julia/site

which (for the version 1.0.2 release) would make the first entry of Base.DEPOT_PATH become:

${PREFIX}/share/julia/site/lib/v1.0

Presumably the first entry of Base.DEPOT_PATH should be the "root package directory", i.e. where all Julia packages installed by this installation of Julia are found/should be installed?

But doesn't this installation of Julia install packages to

${PREFIX}/share/julia/stdlib/v1.0

instead? So should that line in startup.jl be changed?

(Also should I have changed it to LOAD_PATH instead of DEPOT_PATH?)

2. Apparently Julia no longer uses the environment variable JULIA_PGKDIR with Pkg3/Julia v0.7+, so should the if statement checking for that variable be removed or replaced with something else?

(Since right now the condition is basically guaranteed to be false, which probably wasn't the intended behavior.)

Maybe it should say JULIA_LOAD_PATH or JULIA_DEPOT_PATH now? I don't actually understand the difference between the two variables as it is explained in the documentation.