Accumulated changes since 1.73.02:
* Fixed a bug in "align" directive for "dynamic" variant of ELF executable.
* Added "dynamic" variant of ELF executable.
* Added "gnurelro" segment type for ELF executable.
* Added "ud0" and "ud1" instruction.
* Fixed a minor bug in ELF formatter.
* Segments in ELF executable format automatically expanded to cover headers
and dynamic linking information.
* Fixed a bug in "bndstx"/"bndldx" special address syntax processing.
* Added "rdpid", "xsavec", "xsaves", "xrstors", "clzero", "monitorx" and
"mwaitx" instructions.
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