Add more 20.1.5 llvm_distributions

[helly25]

Add more 20.1.5 llvm_distributions

Also:

Assuming 'ibm-aix' is correctly reported use only those distributions, not linux distributions.
Similarly Solaris is also not compatible with linux.
For linux distributions allow the linux-gnueabihf to be detected, so we get that for armv7.
Prove that both sparc64 and sparcv9 can be reached.

Excluding ERRORS from new configs and the gnueabihf we get the following new auto matches:

$ git diff --cached toolchain/internal/llvm_distributions.golden.sel.txt | grep -E '^[+][^+]' | grep -v ERROR | grep -v gnueabihf
+9.0.0-sparcv9-linux/sun-solaris/2.11 -> clang+llvm-9.0.0-sparcv9-sun-solaris2.11.tar.xz
+10.0.0-sparcv9-linux/sun-solaris/2.11 -> clang+llvm-10.0.0-sparcv9-sun-solaris2.11.tar.xz
+11.0.0-sparcv9-linux/sun-solaris/2.11 -> clang+llvm-11.0.0-sparcv9-sun-solaris2.11.tar.xz
+14.0.0-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-14.0.0-powerpc64-ibm-aix-7.2.tar.xz
+14.0.0-sparcv9-linux/sun-solaris/2.11 -> clang+llvm-14.0.0-sparcv9-sun-solaris2.11.tar.xz
+14.0.1-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-14.0.1-powerpc64-ibm-aix-7.2.tar.xz
+14.0.1-sparcv9-linux/sun-solaris/2.11 -> clang+llvm-14.0.1-sparcv9-sun-solaris2.11.tar.xz
+14.0.2-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-14.0.2-powerpc64-ibm-aix-7.2.tar.xz
+14.0.3-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-14.0.3-powerpc64-ibm-aix-7.2.tar.xz
+14.0.4-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-14.0.4-powerpc64-ibm-aix-7.2.tar.xz
+14.0.5-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-14.0.5-powerpc64-ibm-aix-7.2.tar.xz
+14.0.6-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-14.0.6-powerpc64-ibm-aix-7.2.tar.xz
+15.0.0-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-15.0.0-powerpc64-ibm-aix-7.2.tar.xz
+15.0.0-sparcv9-linux/sun-solaris/2.11 -> clang+llvm-15.0.0-sparcv9-sun-solaris2.11.tar.xz
+15.0.1-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-15.0.1-powerpc64-ibm-aix-7.2.tar.xz
+15.0.2-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-15.0.2-powerpc64-ibm-aix-7.2.tar.xz
+15.0.3-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-15.0.3-powerpc64-ibm-aix-7.2.tar.xz
+15.0.4-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-15.0.4-powerpc64-ibm-aix-7.2.tar.xz
+15.0.5-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-15.0.5-powerpc64-ibm-aix-7.2.tar.xz
+15.0.6-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-15.0.6-powerpc64-ibm-aix-7.2.tar.xz
+15.0.7-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-15.0.7-powerpc64-ibm-aix-7.2.tar.xz
+16.0.0-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-16.0.0-powerpc64-ibm-aix-7.2.tar.xz
+16.0.0-sparcv9-linux/sun-solaris/2.11 -> clang+llvm-16.0.0-sparcv9-sun-solaris2.11.tar.xz
+16.0.1-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-16.0.1-powerpc64-ibm-aix-7.2.tar.xz
+16.0.2-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-16.0.2-powerpc64-ibm-aix-7.2.tar.xz
+16.0.3-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-16.0.3-powerpc64-ibm-aix-7.2.tar.xz
+16.0.4-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-16.0.4-powerpc64-ibm-aix-7.2.tar.xz
+16.0.5-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-16.0.5-powerpc64-ibm-aix-7.2.tar.xz
+17.0.1-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-17.0.1-final_powerpc64-ibm-aix-7.2.tar.xz
+17.0.1-sparcv9-linux/sun-solaris/2.11 -> clang+llvm-17.0.1-sparcv9-sun-solaris2.11.tar.xz
+17.0.2-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-17.0.2-powerpc64-ibm-aix-7.2.tar.xz
+17.0.2-sparcv9-linux/sun-solaris/2.11 -> clang+llvm-17.0.2-sparcv9-sun-solaris2.11.tar.xz
+17.0.3-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-17.0.3-powerpc64-ibm-aix-7.2.tar.xz
+17.0.4-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-17.0.4-powerpc64-ibm-aix-7.2.tar.xz
+17.0.5-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-17.0.5-powerpc64-ibm-aix-7.2.tar.xz
+17.0.6-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-17.0.6-powerpc64-ibm-aix-7.2.tar.xz
+17.0.6-sparcv9-linux/sun-solaris/2.11 -> clang+llvm-17.0.6-sparcv9-sun-solaris2.11.tar.xz
+18.1.0-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-18.1.0-powerpc64-ibm-aix-7.2.tar.xz
+18.1.0-sparcv9-linux/sun-solaris/2.11 -> clang+llvm-18.1.0-sparcv9-sun-solaris2.11.tar.xz
+18.1.1-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-18.1.1-powerpc64-ibm-aix-7.2.tar.xz
+18.1.2-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-18.1.2-powerpc64-ibm-aix-7.2.tar.xz
+18.1.2-sparcv9-linux/sun-solaris/2.11 -> clang+llvm-18.1.2-sparcv9-sun-solaris2.11.tar.xz
+18.1.3-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-18.1.3-powerpc64-ibm-aix-7.2.tar.xz
+18.1.4-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-18.1.4-powerpc64-ibm-aix-7.2.tar.xz
+18.1.5-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-18.1.5-powerpc64-ibm-aix-7.2.tar.xz
+18.1.6-sparcv9-linux/sun-solaris/2.11 -> clang+llvm-18.1.6-sparcv9-sun-solaris2.11.tar.xz
+18.1.7-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-18.1.7-powerpc64-ibm-aix-7.2.tar.xz
+18.1.8-powerpc64-linux/ibm-aix/7.2 -> clang+llvm-18.1.8-powerpc64-ibm-aix-7.2.tar.xz