Update to bsnes v107r4 beta release.

byuu says:

  - bsnes: added video filters from bsnes v082
  - bsnes: added ZSNES snow effect option when games paused or unloaded
    (no, I'm not joking)
  - bsnes: added 7-zip support (LZMA 19.00 SDK)

[Recent higan WIPs have also mentioned bsnes changes, although the higan code
no longer includes the bsnes code. These changes include:

  - higan, bsnes: added EXLOROM, EXLOROM-RAM, EXHIROM mappings
  - higan, bsnes: focus the viewport after leaving fullscreen exclusive
    mode
  - bsnes: re-added mightymo's cheat code database
  - bsnes: improved make install rules for the game and cheat code
    databases
  - bsnes: delayed construction of hiro::Window objects to properly show
    bsnes window icons

- Ed.]

nall/cd/sync.hpp

@@ -0,0 +1,27 @@
+#pragma once
+
+namespace nall::CD::Sync {
+
+inline auto create(array_span<uint8_t> sector) -> bool {
+  if(sector.size() != 12 && sector.size() != 2352) return false;
+
+  for(uint n : range(12)) {
+    sector[n] = (n == 0 || n == 11) ? 0x00 : 0xff;
+  }
+
+  return true;
+}
+
+//
+
+inline auto verify(array_view<uint8_t> sector) -> bool {
+  if(sector.size() != 12 && sector.size() != 2352) return false;
+
+  for(uint n : range(12)) {
+    if(sector[n] != (n == 0 || n == 11) ? 0x00 : 0xff) return false;
+  }
+
+  return true;
+}
+
+}