introduced direct ability to call syscalls and linux.sl

tests/syscall_write.sl

@@ -0,0 +1,33 @@
+import ../stdlib/linux.sl
+
+# to demonstrate the ability to not use the stdlib at all, the return codes of syscall are not handeled (droped), in a real world scenario you would want to drop them
+
+word main
+    1
+    "hello"
+    syscall.write
+    syscall
+    #drop
+
+    1
+    " world"
+    3
+    syscall.write.num
+    syscall
+    #drop
+
+    1
+    "!\n"
+    syscall.write.argc
+    syscall.write.num
+    syscall
+    #drop
+
+    1
+    "(via syscall3)\n"
+    syscall.write.num
+    syscall3
+    #drop
+
+    0
+end