Aor jet (#690)

`++aor` jet. 10x speed up with this input:

```hoon
(aor 'aaaaaaaaaaaaaaaa' 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa')
```

pkg/noun/jets/c/aor.c

@@ -0,0 +1,69 @@
+/// @file
+
+#include "jets/q.h"
+#include "jets/w.h"
+
+#include "noun.h"
+
+  u3_noun
+  u3qc_aor(u3_noun a,
+           u3_noun b)
+  {
+    while ( 1 ) {
+      if ( c3y == u3r_sing(a, b) ) return c3y;
+      if ( c3n == u3ud(a) ) {
+        if ( c3y == u3ud(b) ) return c3n;
+        if ( c3y == u3r_sing(u3h(a), u3h(b)) ) {
+          a = u3t(a);
+          b = u3t(b);
+        }
+        else {
+          a = u3h(a);
+          b = u3h(b);
+        }
+      }
+      else {
+        if ( c3n == u3ud(b) ) return c3y;
+        {
+          c3_w len_a_w = u3r_met(3, a);
+          c3_w len_b_w = u3r_met(3, b);;
+          c3_y *buf_a_y, *buf_b_y;
+          c3_y cut_a_y, cut_b_y;
+          if ( c3y == u3a_is_cat(a) ) {
+            buf_a_y = (c3_y*)&a;
+          }
+          else {
+            u3a_atom* a_u = u3a_to_ptr(a);
+            buf_a_y = (c3_y*)(a_u->buf_w);
+          }
+          if ( c3y == u3a_is_cat(b) ) {
+            buf_b_y = (c3_y*)&b;
+          }
+          else {
+            u3a_atom* b_u = u3a_to_ptr(b);
+            buf_b_y = (c3_y*)(b_u->buf_w);
+          }
+          c3_w len_min_w = c3_min(len_a_w, len_b_w);
+          for (c3_w i_w = 0; i_w < len_min_w; i_w++) {
+            cut_a_y = buf_a_y[i_w];
+            cut_b_y = buf_b_y[i_w];
+            if ( cut_a_y != cut_b_y ) return __(cut_a_y < cut_b_y);
+          }
+          return __(len_a_w < len_b_w);
+        }
+      }
+    }
+  } 
+
+  u3_noun
+  u3wc_aor(u3_noun cor)
+  {
+    u3_noun a, b;
+
+    if ( c3n == u3r_mean(cor, u3x_sam_2, &a, u3x_sam_3, &b, 0) ) {
+      return u3m_bail(c3__exit);
+    } else {
+      return u3qc_aor(a, b);
+    }
+  }
+

pkg/noun/jets/q.h

@@ -48,6 +48,7 @@
 
   /** Tier 3.
   **/
+    u3_noun u3qc_aor(u3_atom, u3_atom);
     u3_noun u3qc_bex(u3_atom);
     u3_noun u3qc_xeb(u3_atom);
     u3_noun u3qc_can(u3_atom, u3_noun);

pkg/noun/jets/tree.c

@@ -2463,6 +2463,8 @@ static u3j_core _138_two__by_d[] =
 
 static u3j_harm _138_two_mate_a[] = {{".2", u3wb_mate, c3y}, {}};
 
+static u3j_harm _138_two_aor_a[] = {{".2", u3wc_aor, c3y}, {}};
+
 static u3j_core _138_two_d[] =
 { { "tri", 3, 0, _138_tri_d, no_hashes, _140_tri_ho },
 
@@ -2489,6 +2491,7 @@ static u3j_core _138_two_d[] =
   { "welp", 7, _140_two_welp_a, 0, no_hashes },
   { "zing", 7, _140_two_zing_a, 0, no_hashes },
 
+  { "aor",  7, _138_two_aor_a, 0, no_hashes },
   { "bex",  7, _140_two_bex_a, 0, no_hashes },
   { "cat",  7, _140_two_cat_a, 0, no_hashes },
   { "can",  7, _140_two_can_a, 0, no_hashes },

pkg/noun/jets/w.h

@@ -50,6 +50,7 @@
 
   /** Tier 3.
   **/
+    u3_noun u3wc_aor(u3_noun);
     u3_noun u3wc_bex(u3_noun);
     u3_noun u3wc_xeb(u3_noun);
     u3_noun u3wc_can(u3_noun);