add lwIP TCP/IP stack as a runtime driver, native socket syscalls, SysGetMemoryStatus replacing CatchAllDebugBucket, fix timeGetTime to return milliseconds, fix SysSleep to interpret argument as milliseconds, SysGetTick now returns microseconds, harden all syscalls against bad user pointers with CopyFromUser/CopyToUser/MmProbeUser throughout, add networking test apps, port-forward 8080 in runa.bat, split LWIP_DRIVER_CFLAGS, add settings.ini to deploy, remove ethernet.c stub

code/syscall/syscall_nr.inc

@@ -75,6 +75,20 @@ SYS_MOUSE_GET_POS                EQU 71
 SYS_GET_TICK                     EQU 72
 SYS_DEBUG_PRINT                  EQU 73
 SYS_QUERY_TRAP_FRAME             EQU 74
-SYS_CATCHALLDEBUGBUCKET          EQU 75
+SYS_SOCKET                     EQU 75
+SYS_BIND                       EQU 76
+SYS_LISTEN                     EQU 77
+SYS_ACCEPT                     EQU 78
+SYS_CONNECT                    EQU 79
+SYS_SEND                       EQU 80
+SYS_RECV                       EQU 81
+SYS_SHUTDOWN                   EQU 82
+SYS_SEND_TO                    EQU 83
+SYS_RECV_FROM                  EQU 84
+SYS_RESOLVE_HOST               EQU 85
+SYS_SET_SOCKET_OPTION         EQU 86
+SYS_GET_SOCKET_OPTION         EQU 87
+SYS_POLL                      EQU 88
+SYS_GET_MEMORY_STATUS          EQU 89
 
-SYS_MAX                          EQU 76
+SYS_MAX                          EQU 90