Convert ARM64 armasm to armclang
The armasm legacy assembler is deprecated. The code was migrated to the GNU syntax (used by armclang). https://developer.arm.com/documentation/100068/0621/Migrating-from-armasm-to-the-armclang-Integrated-Assembler
Split this into two commit to keep the history and diff clean
Does Microsoft provide armclang in the default installation of Visual Studio?
These codes are used in many projects. If armasm support is removed, they may require users to install additional dependencies (and a build system modification).
BTW the armasm in file name means ms armasm64, not ARM armasm, they are not deprecated yet.
So I think keeping these armasm64 sources, adding new armclang sources/b2 configurations then wait for ms providing armclang is better
Correct, I couldn't find msvc support armclang for now 😢 Therefore I kept the existing one and added the converted armclang only