samples: add Terra samples

source: https://github.com/zdevito/terra/tree/master/tests

samples/Terra/asm.t

@@ -0,0 +1,28 @@
+local a = ...
+if not a then
+    --force MCJIT
+    os.execute("../terra -m asm.t true")
+    return
+end
+
+C = terralib.includec("stdio.h")
+
+struct Vendor {
+    maxV : int;
+    b : int;
+    c : int;
+    d : int;
+}
+
+terra foo()
+    var r = terralib.asm(Vendor,"cpuid","={eax},={ebx},={ecx},={edx},{eax},~{dirflag},~{fpsr},~{flags}",false,0)
+    r.c,r.d = r.d,r.c
+    C.printf("%.12s\n", &r.b)
+end
+foo()
+
+
+terra addone(a : int)
+    return terralib.asm(int,"addl $$1,$1","=r,0",true,a)
+end
+assert(addone(3) == 4)