tools/clang+llvm/14.0, tools/clang+llvm/15.0: Fix unavailable packages for Clang 14 and 15

Closes #234 (closed)

Changelog entry: using clang+llvm archives from github

Both modules could be simplified drastically. There is only one archive that needs to be downloaded. In addition, the LD_LIBRARY_PATH environment variable does not need to be changed. We had some issues with this in the past, so this is quite beneficial.

Note:

as tar.xz archives cannot be extracted into a dedicated folder, I had to adjust all variables. (Previously, it was extracted into the 'install' folder, now it is e.g. clang+llvm-15.0.6-x86_64-linux-gnu-ubuntu-18.04

assigned to @reister

added 2 commits

• ca366f48 - updating clang+llvm modules to use the archives from github
• 39f7ddc5 - fixing and simplifying llvm+clang modules

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added 1 commit

• 3fdc906a - fixing module variables

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changed the description

requested review from @dreher

marked this merge request as ready

added 1 commit

• 263ba5ea - fixing code quality issue

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resolved all threads

mentioned in issue #250 (closed)

added type::module label

changed milestone to %Release 22.12.5.0

Cannot be merged at this state since it will cause errors in normal usage (see #250 (closed))

removed milestone %Release 22.12.5.0

mentioned in merge request !439 (merged)

added 1 commit

• 12c32b06 - assuming that extract_into works: adjusting variables and executables

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added 1 commit

• 03292914 - minor: module file formatting

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added 1 commit

• 46e6499c - clang 15: adding run-clang-tidy and clang-apply-replacement executables

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added 3 commits

• a1f58af3 - clang: 'standard' archive extraction dir
• 6b190be6 - fix: extract to root dir
• 9f7bb7f0 - fix: wrong path to clang-tidy

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@dreher as discussed. I tested all executables (exe --help)