This also normalizes the structure of all submodule folders so that
there is a clear place to put configurations, outside the submodule
source, but limited in scope to that folder.
Issue #1047 (New build system)
This fixes the Debug build of libpng on arm64 by avoiding CPU-specific
optimizations that are not in our sources list. The Release build
appears to have been unaffected, possibly due to link-time
optimizations or dead code stripping.
Change-Id: I900e00fe30b9f3748f2587cfea89a636b3a19811
Joey Parrish
Joey Parrish
Jacob Trimble