Log Message:
orc: update to 0.4.30.

0.4.30
===================

  - Don't always generate static library but default to shared-only (Xavier \ 
Claessens)
  - Work around false positives in Microsoft UWP certification kit (Nirbheek Chauhan)
  - Add endbr32/endbr64 instructions on x86/x86-64 for indirect branch tracking \ 
(Wim Taymans)
  - Fix gtk-doc build when orc is used as a meson subproject (Mathieu Duponchelle)
  - Switch float comparison in tests to ULP method to fix spurious failures \ 
(Doug Nazar)
  - Fix flushing of ARM icache when using dual map (Doug Nazar)
  - Use float constants/parameters when testing float opcodes (Doug Nazar)
  - Add support for Hygon Dhyana processor (fanjinke)
  - Fix PPC/PPC64 CPU family detection (Doug Nazar)
  - Add little-endian PPC support (Doug Nazar)
  - Fix compiler warnings with clang (Matthew Waters)
  - Mark exec mapping writable in debug mode for allowing breakpoints (Doug Nazar)
  - Various codegen refactorings (Doug Nazar)
  - autotools support has been dropped in favour of Meson as build system \ 
(Tim-Philipp Müller)
  - Fix PPC CPU feature detection and add support for VSX/v2.07 (Doug Nazar)
  - Add double/int64 support for PPC (Doug Nazar)