[Issue 19434] "Invalid signature" when using install.sh with no ~/.gnupg

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19434

--- Comment #2 from github-bugzilla at puremagic.com ---
Commits pushed to master at https://github.com/dlang/installer

https://github.com/dlang/installer/commit/ce7949408ac279c78ac765773b25b956785c8089
script/install.sh: Initialize GPG directory before invoking it

On some (older?) versions, --verify will fail if GNUPGHOME (~/.gnupg)
does not exist, even with --no-default-keyring, as that's where it
creates its temporary files.

Fixes issue 19434.

https://github.com/dlang/installer/commit/ce225047968cf9404eeafbf6f2a87975198c7483
Merge pull request #352 from CyberShadow/pull-20181125-164347

Fix Issue 19434 - "Invalid signature" when using install.sh with no ~/.gnupg

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