Purpose: Improvement for HDFFV-10004

Description:
    When adding wrappers for H5Lexists, a new class, LinkAccPropList, was
    added to the C++ API, triggered complicated circular dependencies.  Thus,
    some improvement was made to resolve the problems.
    - Replaced existing functions openXxxType with individual type constructors
      + Added individual XxxType constructors to replace the existing functions
        openXxxType because it's rather awkward to use these functions.
      + Moved openXxxType from H5Location back to CommonFG
      + Put back CommonFG as a baseclass of Group for openXxxType functions.
      + This replacement should improve usability and prevent the problem of
        circular dependencies.
    - Removed overloaded constructor that takes an Attribute when there is
        already one that takes H5Location because Attribute inherits from
        H5Location now.
Platforms tested:
    Linux/32 2.6 (jam)
    Darwin (osx1010test)
    Linux/64 (platypus)

c++/test/tarray.cpp

@@ -34,6 +34,7 @@ using namespace H5;
 #include "h5cpputil.h"  // C++ utilility header file
 
 const H5std_string    FILENAME("tarray.h5");
+const H5std_string    ARRAYTYPE_NAME("/Array type 1");
 const int SPACE1_RANK = 1;
 const hsize_t SPACE1_DIM1 = 4;
 const int ARRAY1_RANK = 1;
@@ -130,9 +131,22 @@ static void test_array_compound_array()
 	// Write dataset to disk
 	dataset.write(wdata, arrtype);
 
+	// Test opening ArrayType with opening constructor (Dec 2016)
+
+	// Commit the arrtype to give it a name
+	arrtype.commit(file1, ARRAYTYPE_NAME);
+
+	// Close it, then re-open with the opening constructor
+	arrtype.close();
+	ArrayType named_type(file1, ARRAYTYPE_NAME);
+
+	// Get and verify the type's name
+	H5std_string type_name = named_type.getObjName();
+	verify_val(type_name, ARRAYTYPE_NAME, "DataType::getObjName tests constructor", __LINE__, __FILE__);
+	named_type.close();
+
 	// Close all
 	dataset.close();
-	arrtype.close();
 	space.close();
 	file1.close();