Bring SWMR-related tools changes from revise_chunks to develop.

hl/tools/testfiles/w-ext-two-width.ddl

@@ -0,0 +1,41 @@
+Opened "TEST.h5" with sec2 driver.
+Monitoring dataset /DSET_TWO...
+dimension 0: 4->6 (increases)
+dimension 1: 10->12 (increases)
+    Data:
+        (0,10) 1, 1
+        (1,10) 1, 1
+        (2,10) 1, 1
+        (3,10) 1, 1
+        (4,0) 1, 1, 1, 1, 1,
+        (4,5) 1, 1, 1, 1, 1,
+        (4,10) 1, 1,
+        (5,0) 1, 1, 1, 1, 1,
+        (5,5) 1, 1, 1, 1, 1,
+        (5,10) 1, 1
+dimension 0: 6->8 (increases)
+dimension 1: 12->1 (decreases)
+    Data:
+        (6,0) 2,
+        (7,0) 2
+dimension 0: 8->10 (increases)
+dimension 1: 1->1 (unchanged)
+    Data:
+        (8,0) 3,
+        (9,0) 3
+dimension 0: 10->3 (decreases)
+dimension 1: 1->3 (increases)
+    Data:
+        (0,1) 4, 4
+        (1,1) 4, 4
+        (2,1) 4, 4
+dimension 0: 3->2 (decreases)
+dimension 1: 3->2 (decreases)
+dimension 0: 2->1 (decreases)
+dimension 1: 2->2 (unchanged)
+dimension 0: 1->1 (unchanged)
+dimension 1: 2->4 (increases)
+    Data:
+        (0,2) 7, 7
+dimension 0: 1->1 (unchanged)
+dimension 1: 4->3 (decreases)