Update local OpenPGP certificate to include new signing subkey.
Lock sources to tag object (by git commit hash).
Add `pkgver()` function since we are building from git sources.
Switch to correct SPDX license identifier for project.
Run tests with one job to (hopefully) mitigate flakiness.
Remove unused patches and build using LTO again (since the toolchain issues seem to be fixed).

Move options to make to a local bash array for easier handling.

archlinux/devtools!109 (comment 74475)

Upstream fixed the ld problem, so we can drop a custom (not very good) patch:
https://github.com/rhboot/efivar/pull/201

Add libefisec.so to provides.
Add mandoc to makedepends and grub to checkdepends.
Use upstream provided ERRORS parameter to not use -Werror by default.
Add patch to fix linker issues due to a file containing output sections:
https://github.com/rhboot/efivar/pull/195
Add check() and run (unfortunately flaky) tests.
Do not build and install the tester binary (the build system is broken and
upstream also doesn't use it).
Simplify calls to make.
Simplify quoting in file.

Updating pkgdesc to reflect upstream.
Updating url to current rhboot team on github.
Adding libefivar.so and libefiboot.so to provides. Adding glibc to depends.
Removing unrequired popt from depends. Removing redundant options array.
Adding PGP key of Peter Jones (B00B48BC731AA8840FED9FB0EED266B70F4FEF10) and checking tag against it.
Removing -Werror from gcc.specs and all cherry-picked commits (as they were failing due to -Werror).
Removing unnecessary parameters to make and simplifying the make calls.
Minor cleanups and installing docs.
Updating maintainer info.

adding prepare(), using https: git repo url instead of git: repo url, adding versioned provides to 'libefivar', as well as correcting name in the contributor field