Version 2.0.0-rc7

This release is expected to be the real last RC release of Unicorn2. ;)

Features:

• Correctly generate static archives for the static build and have CI auto-tested.
• Rust bindings revised. #1584
• Compatible with clang-cl compiler. #1581
• Implement UC_HOOK_INSN for aarch64 MRS/MSR/SYS/SYSL

Fixes/Improvements:

• Several corner cases on our API. #1587 #1595
• Fix the codegen buffer leak.
• Rust bindins improvements. #1574 #1575
• Add "holes" to allow unicorn lib as a drop-in replacement for older ones. #1572
• s390x backports. #1570
• Fix exits wrongly removed in nested uc_emu_start
• Fix a possible endless loop for only one translation block in a multithreaded environment.
• Fix wrong PC without UC_HOOK_CODE installed.
• Update vb6 bindings license. #1563
• Fix buffer allocation failure on M1. #1559
• Fix wrong EFLAGS on startup.
• Fix wrong internal states on nested uc_emu_start.
• Remove armeb-softmmu and aarcheb-softmmu which are usermode targets.
• Advance PPC32 PC. #1558
• Support UC_PPC_REG_CR.
• Update CI to windows-2019

Thanks:

@shuffle2 @liyansong2018 @rose4096 @nviennot @n1tram1 @iii-i @dzzie @yrashk @bet4it