[svn-r24072] Merge trunk cmake changes to 1.8 branch.

Also add default switch blocks to h5import.
Merge h5dump any_path option from trunk.

Tested: local linux

tools/testfiles/tboot2A.ddl

@@ -0,0 +1,18 @@
+HDF5 "tfcontents2.h5" {
+SUPER_BLOCK {
+   SUPERBLOCK_VERSION 0
+   FREELIST_VERSION 0
+   SYMBOLTABLE_VERSION 0
+   OBJECTHEADER_VERSION 0
+   OFFSET_SIZE 8
+   LENGTH_SIZE 8
+   BTREE_RANK 16
+   BTREE_LEAF 4
+   ISTORE_K 32
+   USER_BLOCK {
+      USERBLOCK_SIZE 0
+   }
+}
+GROUP "/" {
+}
+}