Add ISA-extended libcrypt and libssl to RISCV-64 exemplars

[thixotropist]

The current tip of openssl development includes support for multiple RISCV-64 ISA extensions, including support for vector cryptography. That makes libcrypt and libssl good exemplars for Ghidra import testing.

• Track the tip of the openssl source repo
• Configure with as many ISA extensions as have matching flags in the source code
  • currently something like -march=rv64gcv_zkne_zknd_zknh_zvkng_zvbb_zvbc_zvkb_zvkg_zvkned_zvksg
  • build and link using a snapshot of gcc 14.0.1
  • import into Ghidra 11.1-DEV (isa_ext)
  • add to Ghidra 11.1-DEV (isa_ext) any missing instructions, pcode semantics, and vset* modes found
  • move libcrypt.so and libssl.so into riscv64/exemplars

[thixotropist]

Completed with commit 6dc26ba0f