Moved all generic IP files into the net/ip module
Moved IPv4 files into the net/ipv4 module
Moved IPv6 files into the net/ipv6 module
Updated include paths for the moved files under net/
First stab at implementing the MODULES mechanism
Use the MODULES mechanism for the native platform
Replaced the old Makefile.uip with module makefiles
Made the rime code into a separate module
Include the core/net and core/net/ip modules in the core/net/ipv4 module
Include the core/net and core/net/ip modules in the core/net/ipv6 module
Moved the contikimac code into a core/net/mac/contikimac module
Moved cxmac into a separate module
Added makefiles to make core/net/mac into a separate module
Moved the cc2420 driver into a separate dev/cc2420 module
Include a set of basic modules
Include the core/net module by default in the core/net/ip module
Include a basic set of modules
Turned sicslowmac into a module
Makefile for the core/sys module
Makefile for the core/dev module