Proper Amiga-suport is supplied by using the AmiTCP stack when
USE_AMITCP is enabled. Add explicit OpenLibrary/CloseLibrary
calls, for those people who don't link against auto-opening
libs ala VBCC's auto.s.
Add a typedef for uint32_t (needed for network communication)
for Motorola 68k platforms.
Also add a SAS/C support for the 'inline' keyword.
Thanks to Aske Simon Christensen for help with the SAS/C support.