rather than '#ifdef' BIG_ENDIAN_HOST. Harmless as we explicitly
define BIG_ENDIAN_HOST to 1 when we need it, but needed for OSX fat
builds when we define BIG_ENDIAN_HOST to another macro.
rijndael.c, rndunix.c, sha256.c, cast5.c, idea-stub.c, rmd160.c, rndw32.c,
sha512.c, md5.c, rmd160test.c, rsa.c, tiger.c: Edit all preprocessor
instructions to remove whitespace before the '#'. This is not required by
C89, but there are some compilers out there that don't like it.