- Remove extern "C". There are no functions with external linkage here. [1]
- Rename bswapNN_const(x) to bswapNN_gen(x) to indicate that these macros
are generic implementations that can take non-constant arguments. [1]
- Split up __GNUCLIKE_ASM && __GNUCLIKE_BUILTIN_CONSTANT_P and deal with
each separately.
- Replace _LP64 with __amd64__ because asm instructions are machine
dependent, not ABI dependent.
Submitted by: bde [1]
Reviewed by: bde