Add test case sort-algorithms.asm

This combines 0.5.0 and post-0.5.0 features:
print and println, strfmt, for loops,
def assignments, redef equs, {interpolation},
new macro syntax, and \<bracketed macro args>

test/asm/sort-algorithms.asm

@@ -0,0 +1,47 @@
+MACRO sort_recursive
+    if _NARG > 0
+        def min_i = 1
+        for i, 2, _NARG + 1
+            if \<i> < \<min_i>
+                def min_i = i
+            endc
+        endr
+        print strfmt("%d", \<min_i>)
+    endc
+    if _NARG > 1
+        print ", "
+        redef _subsort equs "sort_recursive "
+        for i, 1, _NARG + 1
+            if i != min_i
+                redef _subsort equs "{_subsort}\<i>,"
+            endc
+        endr
+        {_subsort}
+    else
+        println
+    endc
+ENDM
+
+MACRO sort_iterative
+    for i, 1, _NARG + 1
+        def got_{d:i} = 0
+    endr
+    for n, 1, _NARG + 1
+        def min_i = 1
+        for i, 2, _NARG + 1
+            if (\<i> < \<min_i> && !got_{d:i}) || got_{d:min_i}
+                def min_i = i
+            endc
+        endr
+        def got_{d:min_i} = 1
+        print strfmt("%d", \<min_i>)
+        if n < _NARG
+            print ", "
+        else
+            println
+        endc
+    endr
+ENDM
+
+    sort_recursive 16, 0, 16, 5, 1, 18, 3, 14, 19, 4, 6, 13, 17, 7, 11, 8, 15, 10, 12, 9, 2
+    sort_iterative 16, 0, 16, 5, 1, 18, 3, 14, 19, 4, 6, 13, 17, 7, 11, 8, 15, 10, 12, 9, 2