Usermode/ld-acess - Bugfix and extra syscall

- Fixes when programs are linked against ld-acess.so instead of libld-acess.so
- SYS_COPYFD added
- Cleaned up twiddling loaded library list from main()
 > Now hardcoded check in IsLoaded is used for *ld-acess.so
Usermode/libc - Fixed back-seek of -1 when a write error occurs in buffering
Usermode/libc - More errno values and signal symbolic names
Usermode/libposix - More definitions on the way to dropbear
Usermode/libpsocket - getnameinfo and other definitions
Tools/GCCProxy - Included libposix and libpsocket (for some reason)
Kernel/x86 - mm_virt: Allowed PhysAddr=NULL with AllocDMA
Kernel/x86 - acpica: Debug to trace AE_NO_MEMORY cause
Kernel/x86 - mboot: Cleaning up source, added sanity checks
Modules/IPStack - Added MAC checksum offload support
Modules/E1000 - Partially functional driver

- Has caused qemu to segfault
- Causes system lockups in some cases
Usermode/init - Fixes to parsing and error checks, added startup log
Modules/PCnetFAST3 - Partially functional

- Has causes emulator crashes
- Doesn't really work
Usermode/Filesystem - inittab: Added telnet server as a daemon
BuildConf - Added PCnetFAST3 to x86 default config