Replace calls to (legacy) bcopy() with calls to memcpy()
Replace calls to (legacy) bcmp() with calls to memcmp()
Replace calls to (legacy) bzero() with calls to memset()
Missing changed files from previous commits
Add BYTE_ORDER definitions for some Mac OS versions (on behalf of Declan Rieb)
Fix bug related to packet sizes
Change banner for version v1.5.3
Imported Upstream version 2.0beta