Add BDD AND_GIVEN based macros

issue #1360

It is possible to have multple  given contexts in a single BDD scenario;
if you have to type 'and' in the GIVEN description; it's very likely you
need an AND.

A generic AND  is not possible, thus a AND_GIVEN  is added to complement
the AND_WHEN and AND_THEN.

Can be used without needing to increase indent:

	SCENARIO("...") {
		GIVEN("...")
		AND_GIVEN("...") {
			WHEN("...") {
				THEN("...") {
					// ...
				}
			}
		}
	}

would correctly output, when requested/needed:

    Given: ...
And given: ...
     When: ...
     Then: ...

The padding had to be increased by a character in the output message, to
continue to be uniform.

include/catch.hpp

@@ -148,11 +148,12 @@
 // "BDD-style" convenience wrappers
 #define CATCH_SCENARIO( ... ) CATCH_TEST_CASE( "Scenario: " __VA_ARGS__ )
 #define CATCH_SCENARIO_METHOD( className, ... ) INTERNAL_CATCH_TEST_CASE_METHOD( className, "Scenario: " __VA_ARGS__ )
-#define CATCH_GIVEN( desc )    INTERNAL_CATCH_DYNAMIC_SECTION( "   Given: " << desc )
-#define CATCH_WHEN( desc )     INTERNAL_CATCH_DYNAMIC_SECTION( "    When: " << desc )
-#define CATCH_AND_WHEN( desc ) INTERNAL_CATCH_DYNAMIC_SECTION( "And when: " << desc )
-#define CATCH_THEN( desc )     INTERNAL_CATCH_DYNAMIC_SECTION( "    Then: " << desc )
-#define CATCH_AND_THEN( desc ) INTERNAL_CATCH_DYNAMIC_SECTION( "     And: " << desc )
+#define CATCH_GIVEN( desc )     INTERNAL_CATCH_DYNAMIC_SECTION( "    Given: " << desc )
+#define CATCH_AND_GIVEN( desc ) INTERNAL_CATCH_DYNAMIC_SECTION( "And given: " << desc )
+#define CATCH_WHEN( desc )      INTERNAL_CATCH_DYNAMIC_SECTION( "     When: " << desc )
+#define CATCH_AND_WHEN( desc )  INTERNAL_CATCH_DYNAMIC_SECTION( " And when: " << desc )
+#define CATCH_THEN( desc )      INTERNAL_CATCH_DYNAMIC_SECTION( "     Then: " << desc )
+#define CATCH_AND_THEN( desc )  INTERNAL_CATCH_DYNAMIC_SECTION( "      And: " << desc )
 
 // If CATCH_CONFIG_PREFIX_ALL is not defined then the CATCH_ prefix is not required
 #else
@@ -212,11 +213,12 @@
 #define SCENARIO( ... ) TEST_CASE( "Scenario: " __VA_ARGS__ )
 #define SCENARIO_METHOD( className, ... ) INTERNAL_CATCH_TEST_CASE_METHOD( className, "Scenario: " __VA_ARGS__ )
 
-#define GIVEN( desc )    INTERNAL_CATCH_DYNAMIC_SECTION( "   Given: " << desc )
-#define WHEN( desc )     INTERNAL_CATCH_DYNAMIC_SECTION( "    When: " << desc )
-#define AND_WHEN( desc ) INTERNAL_CATCH_DYNAMIC_SECTION( "And when: " << desc )
-#define THEN( desc )     INTERNAL_CATCH_DYNAMIC_SECTION( "    Then: " << desc )
-#define AND_THEN( desc ) INTERNAL_CATCH_DYNAMIC_SECTION( "     And: " << desc )
+#define GIVEN( desc )     INTERNAL_CATCH_DYNAMIC_SECTION( "    Given: " << desc )
+#define AND_GIVEN( desc ) INTERNAL_CATCH_DYNAMIC_SECTION( "And given: " << desc )
+#define WHEN( desc )      INTERNAL_CATCH_DYNAMIC_SECTION( "     When: " << desc )
+#define AND_WHEN( desc )  INTERNAL_CATCH_DYNAMIC_SECTION( " And when: " << desc )
+#define THEN( desc )      INTERNAL_CATCH_DYNAMIC_SECTION( "     Then: " << desc )
+#define AND_THEN( desc )  INTERNAL_CATCH_DYNAMIC_SECTION( "      And: " << desc )
 
 using Catch::Detail::Approx;
 
@@ -277,6 +279,7 @@ using Catch::Detail::Approx;
 #define CATCH_SCENARIO( ... ) INTERNAL_CATCH_TESTCASE_NO_REGISTRATION(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_S_T____ ))
 #define CATCH_SCENARIO_METHOD( className, ... ) INTERNAL_CATCH_TESTCASE_METHOD_NO_REGISTRATION(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_S_T____ ), className )
 #define CATCH_GIVEN( desc )
+#define CATCH_AND_GIVEN( desc )
 #define CATCH_WHEN( desc )
 #define CATCH_AND_WHEN( desc )
 #define CATCH_THEN( desc )
@@ -341,6 +344,7 @@ using Catch::Detail::Approx;
 #define SCENARIO_METHOD( className, ... ) INTERNAL_CATCH_TESTCASE_METHOD_NO_REGISTRATION(INTERNAL_CATCH_UNIQUE_NAME( ____C_A_T_C_H____T_E_S_T____ ), className )
 
 #define GIVEN( desc )
+#define AND_GIVEN( desc )
 #define WHEN( desc )
 #define AND_WHEN( desc )
 #define THEN( desc )