MSVC 2013 compatibility: some explicit typing needed.

src/Magnum/Test/DebugMessageTest.cpp

@@ -40,7 +40,7 @@ class DebugMessageTest: public TestSuite::Tester {
 };
 
 DebugMessageTest::DebugMessageTest() {
-    addTests({&DebugMessageTest::debugSource,
+    addTests<DebugMessageTest>({&DebugMessageTest::debugSource,
               &DebugMessageTest::debugType,
               &DebugMessageTest::debugSeverity});
 }

src/Magnum/Test/ImageReferenceTest.cpp

@@ -39,7 +39,7 @@ class ImageReferenceTest: public TestSuite::Tester {
 };
 
 ImageReferenceTest::ImageReferenceTest() {
-    addTests({&ImageReferenceTest::construct,
+    addTests<ImageReferenceTest>({&ImageReferenceTest::construct,
               &ImageReferenceTest::setData});
 }
 

src/Magnum/Test/ShaderTest.cpp

@@ -38,7 +38,7 @@ class ShaderTest: public TestSuite::Tester {
 };
 
 ShaderTest::ShaderTest() {
-    addTests({&ShaderTest::debugType});
+    addTests<ShaderTest>({&ShaderTest::debugType});
 }
 
 void ShaderTest::debugType() {

src/Magnum/Test/VersionTest.cpp

@@ -38,7 +38,7 @@ class VersionTest: public TestSuite::Tester {
 };
 
 VersionTest::VersionTest() {
-    addTests({&VersionTest::fromNumber,
+    addTests<VersionTest>({&VersionTest::fromNumber,
               &VersionTest::toNumber});
 }