85b5ccea1f
This updates to the version from commit 7380ac24e1cd23a5e6d76c6af083d8fc5ab9e943 from https://github.com/ffmpeg/gas-preprocessor. The previous version was from 2017, from commit ee12830747ff0b97ec6b41f4263fec63d1711365. This includes support for assembling aarch64 code with register ranges, such as {v0.8b-v3.8b} with armasm64 (rewritten into an explicit list of registers), and fixes deprecated Perl syntax broken by more modern versions of Perl.