updated gitignore to forget about generated .d files.
sysdep: syscall macros adjustments.
rtl: can convert strbuf to proper ASCIIZ for syscalls.
vm_thunks: added read() and write(), fixed open().
vm/vma: moved out opcode gen. moved vma to top-level src.
makefiles redone to build outside src.
TODO: fix .d generation to be outside src.
makefile tweaks
a makefile for local settings.
sysdep: added sys_time().
vm: ioctl() added.
vm: division opcodes adjusted; 2+ return values fixed.
vm/vma: changed memory ops mnemonics. swapped operans for add/sub.