Big type inference improvements

examples/array/main.nub

@@ -5,5 +5,6 @@ extern "puts" func puts(text: cstring)
 extern "main" func main(argc: i64, argv: [?]cstring): i64
 {
     let x = [23]i32
+    puts("test")
     return x[0]
 }

examples/array/makefile

@@ -1,5 +1,5 @@
 .build/out: main.nub
-	nubc main.nub
+	clang $$(nubc main.nub) -o .build/out
 
 clean:
 	@rm -r .build 2>/dev/null || true

examples/hello-world/makefile

@@ -1,5 +1,5 @@
 .build/out: main.nub
-	nubc main.nub
+	clang $$(nubc main.nub) -o .build/out
 
 clean:
 	@rm -r .build 2>/dev/null || true