Template tests: added TEMPLATE_PRODUCT_TEST_CASE

support for generating test cases based on multiple template template
types combined with template arguments for each of the template template
types specified

e.g.
```
TEMPLATE_PRODUCT_TEST_CASE("template product","[template]",
			   (std::tuple, std::pair, std::map),
			   ((int,float),(char,double),(int,char)))
```
will effectively create 9 test cases with types:
std::tuple<int,float>
std::tuple<char,double>
std::tuple<int,char>
std::pair<int,float>
std::pair<char, double>
std::pair<int,char>
std::map<int,float>
std::map<char,double>
std::map<int,char>

Tested type is accessible in test case body as TestType
Unique name is created by appending ` - <index>` to test name
since preprocessor has some limitations in recursions

Closes #1454

projects/SelfTest/UsageTests/Misc.tests.cpp

@@ -61,6 +61,11 @@ CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS
 static AutoTestReg autoTestReg;
 CATCH_INTERNAL_UNSUPPRESS_GLOBALS_WARNINGS
 
+template<typename T>
+struct Foo {
+    size_t size() { return 0; }
+};
+
 #endif
 
 TEST_CASE( "random SECTION tests", "[.][sections][failing]" ) {
@@ -301,6 +306,15 @@ TEMPLATE_TEST_CASE( "TemplateTest: vectors can be sized and resized", "[vector][
     }
 }
 
+TEMPLATE_PRODUCT_TEST_CASE("A Template product test case", "[template][product]", (std::vector, Foo), (int, float)) {
+    TestType x;
+    REQUIRE(x.size() == 0);
+}
+
+TEMPLATE_PRODUCT_TEST_CASE("Product with differing arities", "[template][product]", std::tuple, (int, (int, double), (int, double, float))) {
+    REQUIRE(std::tuple_size<TestType>::value >= 1);
+}
+
 // https://github.com/philsquared/Catch/issues/166
 TEST_CASE("A couple of nested sections followed by a failure", "[failing][.]") {
     SECTION("Outer")