Clean Up Testing Class Instantiations

[pbauman]

Before it occurred to me to use a macro, there's at least 3 different testing classes to get registered with CppUnit (float, double, long double). Of course, this make it easy to add a test to one and forget the others. In #240, it occurred to me we can use a macro along these lines:

#define DEFINE_NASA7XMLPARSING_SCALAR_TEST(Classname,BaseClass,Scalar)  \
  class Classname : public BaseClass                            \
  {                                                                     \
  public:                                                               \
    CPPUNIT_TEST_SUITE( Classname );                                    \
    CPPUNIT_TEST(test_supplied_species);                                \
    CPPUNIT_TEST(test_parsed_species_list);                             \
    CPPUNIT_TEST(test_gri30_xml);                                       \
    CPPUNIT_TEST_SUITE_END();                                           \
  }

DEFINE_NASA7XMLPARSING_SCALAR_TEST(NASA7XMLParsingTestFloat,NASA7XMLParsingTest,float);
DEFINE_NASA7XMLPARSING_SCALAR_TEST(NASA7XMLParsingTestDouble,NASA7XMLParsingTest,double);
DEFINE_NASA7XMLPARSING_SCALAR_TEST(NASA7XMLParsingTestLongDouble,NASA7XMLParsingTest,long double);


CPPUNIT_TEST_SUITE_REGISTRATION( NASA7XMLParsingTestFloat );
CPPUNIT_TEST_SUITE_REGISTRATION( NASA7XMLParsingTestDouble );
CPPUNIT_TEST_SUITE_REGISTRATION( NASA7XMLParsingTestLongDouble );

where the base testing class is templated on the Scalar type.

So let's go back and clean up all the other tests that aren't doing this.