Brought debug facilities from Corrade::Utility to Magnum namespace.

These classes are used so frequently that it is counterproductive to not
have them here.

src/AbstractShaderProgram.cpp

@@ -20,7 +20,6 @@
 #define LINKER_MESSAGE_MAX_LENGTH 1024
 
 using namespace std;
-using namespace Corrade::Utility;
 
 namespace Magnum {
 

src/Contexts/GlutContext.cpp

@@ -15,8 +15,6 @@
 
 #include "GlutContext.h"
 
-using namespace Corrade::Utility;
-
 namespace Magnum { namespace Contexts {
 
 GlutContext* GlutContext::instance = nullptr;

src/Contexts/Sdl2Context.cpp

@@ -15,8 +15,6 @@
 
 #include "Sdl2Context.h"
 
-using namespace Corrade::Utility;
-
 namespace Magnum { namespace Contexts {
 
 Sdl2Context::Sdl2Context(int argc, char** argv, const std::string& name, const Math::Vector2<GLsizei>& size): _redraw(true) {

src/Magnum.h

@@ -27,6 +27,11 @@
 
 namespace Magnum {
 
+/* Bring debugging facility from Corrade::Utility namespace */
+using Corrade::Utility::Debug;
+using Corrade::Utility::Warning;
+using Corrade::Utility::Error;
+
 /** @brief Two-component floating-point vector */
 typedef Math::Vector2<GLfloat> Vector2;
 

src/MeshTools/Test/CombineIndexedArraysTest.cpp

@@ -23,7 +23,6 @@
 QTEST_APPLESS_MAIN(Magnum::MeshTools::Test::CombineIndexedArraysTest)
 
 using namespace std;
-using namespace Corrade::Utility;
 
 namespace Magnum { namespace MeshTools { namespace Test {
 

src/MeshTools/Test/CompressIndicesTest.cpp

@@ -23,7 +23,7 @@
 QTEST_APPLESS_MAIN(Magnum::MeshTools::Test::CompressIndicesTest)
 
 using namespace std;
-using namespace Corrade::Utility;
+using Corrade::Utility::Endianness;
 
 namespace Magnum { namespace MeshTools { namespace Test {
 

src/MeshTools/Test/FlipNormalsTest.cpp

@@ -22,7 +22,6 @@
 QTEST_APPLESS_MAIN(Magnum::MeshTools::Test::FlipNormalsTest)
 
 using namespace std;
-using namespace Corrade::Utility;
 
 namespace Magnum { namespace MeshTools { namespace Test {
 

src/MeshTools/Test/GenerateFlatNormalsTest.cpp

@@ -22,7 +22,6 @@
 QTEST_APPLESS_MAIN(Magnum::MeshTools::Test::GenerateFlatNormalsTest)
 
 using namespace std;
-using namespace Corrade::Utility;
 
 namespace Magnum { namespace MeshTools { namespace Test {
 

src/MeshTools/Test/InterleaveTest.cpp

@@ -25,7 +25,7 @@
 QTEST_APPLESS_MAIN(Magnum::MeshTools::Test::InterleaveTest)
 
 using namespace std;
-using namespace Corrade::Utility;
+using Corrade::Utility::Endianness;
 
 namespace Magnum { namespace MeshTools { namespace Test {
 

src/MeshTools/Test/SubdivideTest.cpp

@@ -24,7 +24,6 @@
 QTEST_APPLESS_MAIN(Magnum::MeshTools::Test::SubdivideTest)
 
 using namespace std;
-using namespace Corrade::Utility;
 
 namespace Magnum { namespace MeshTools { namespace Test {
 

src/Primitives/UVSphere.cpp

@@ -16,7 +16,6 @@
 #include "UVSphere.h"
 
 using namespace std;
-using namespace Corrade::Utility;
 
 namespace Magnum { namespace Primitives {
 

src/Shader.cpp

@@ -20,7 +20,6 @@
 #define COMPILER_MESSAGE_MAX_LENGTH 1024
 
 using namespace std;
-using namespace Corrade::Utility;
 
 namespace Magnum {
 

src/Shaders/PhongShader.cpp

@@ -17,12 +17,10 @@
 
 #include "Utility/Resource.h"
 
-using namespace Corrade::Utility;
-
 namespace Magnum { namespace Shaders {
 
 PhongShader::PhongShader() {
-    Resource rs("shaders");
+    Corrade::Utility::Resource rs("shaders");
     attachShader(Shader::fromData(Shader::Type::Vertex, rs.get("PhongShader.vert")));
     attachShader(Shader::fromData(Shader::Type::Fragment, rs.get("PhongShader.frag")));
 

src/SizeTraits.h

@@ -124,7 +124,7 @@ template<class Base> struct SizeBasedCall: public Base {
                 return Base::template run<GLuint>(std::forward<Args>(arguments)...);
         }
 
-        Corrade::Utility::Error() << "SizeBasedCall: no type able to index" << size << "elements.";
+        Error() << "SizeBasedCall: no type able to index" << size << "elements.";
         return decltype(Base::template run<GLubyte>(std::forward<Args>(arguments)...))();
     }
 

src/Test/ObjectTest.cpp

@@ -21,7 +21,6 @@
 #include <QtTest/QTest>
 
 using namespace std;
-using namespace Corrade::Utility;
 
 QTEST_APPLESS_MAIN(Magnum::Test::ObjectTest)
 

src/Trade/AbstractImporter.cpp

@@ -16,7 +16,6 @@
 #include "AbstractImporter.h"
 
 using namespace std;
-using namespace Corrade::Utility;
 
 namespace Magnum { namespace Trade {