feat: support PAC stripping on old assemblers #118
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Older toolchains might have assemblers that don't know the
XPACLRImnemonic but could targetaarch64anyway, including CPUs supportingPAC(i.e. ARMv8.3). When using those toolchains,crashpadwill fail to build. We can generate inline-assembly that uses the respectivehintto hide the fact that the assembler isn't aware of the instruction.