Merge branch 'jk/sha1dc'

sha1dc/sha1.c wanted to check the endianness of the target platform at compilation time and used a CPP macro with a rather overly generic name, "BIGENDIAN", to pass the result of the check around in the file. It wasn't prepared for the same macro set to 0 (false) by the platform to signal that the target is _not_ a big endian box, and assumed that the endianness detection logic it has alone would be the one that is setting the macro, resulting in a breakage on Windows. This has been fixed by using a bit less generic name for the same purpose. * jk/sha1dc: sha1dc: avoid CPP macro collisions