Пакет custom-libubsan0: Информация

- C7 custom port:
  + No Ada, no Fortran, no Java, no Go;
  + No gdb-plugin and no libcilkrts;
  + Libraries and most executables can be found only by absolute paths
    which include GCC version\marker, common libraries of all versions
    of the custom-gcc can be found in the same place;
  + custom libraries (such as custom-libstdc++6 and custom-libgcc1)
    should not be used in runtime (maintainers should set RPATH to use them
    in exceptional cases).

- Moved liblto_plugin.so back into %_libexecdir.
- Added executable bit to liblto_plugin.so.
- Backported upstram fix:
 + Enable frame pointer for TARGET_64BIT_MS_ABI when stack is
  misaligned (ALT#31834).

- Moved liblto_plugin.so into %_libdir.