nDrawExts2: Do more with Mojo- without hacking it!

../main.cpp: In member function 'GLint ShaderProgramNative::_GetUniformLocation(String)':
../main.cpp:5069:43: error: invalid user-defined conversion from 'String::CString<char>' to 'GLchar* {aka char*}' [-fpermissive]
  GLchar *theName = name.ToCString<GLchar>();
                                           ^
../main.cpp:1100:3: note: candidate is: String::CString<C>::operator const C*() const [with C = char] <near match>
   operator const C*()const{ 
   ^
../main.cpp:1100:3: note:   no known conversion for implicit 'this' parameter from 'const char*' to 'GLchar* {aka char*}'
<builtin>: recipe for target '../main.o' failed
mingw32-make: *** [../main.o] Error 1

GLint ShaderProgramNative::_GetUniformLocation(String name)
{
	// --- get location of a uniform ---
	// This location won't change again until the program is re-linked, so it can be reused.
	GLint location = glGetUniformLocation(program, name.ToCString<GLchar>());
	
	// Check for errors:
	error = glGetError();
	if (error == GL_INVALID_VALUE || error == GL_INVALID_OPERATION)
	{
		// An error has occurred.
		return -1;
	}
	
	// Everything worked as expected.
	return location;
}

String::CString<GLchar> convertedSource = source.ToCString<GLchar>(); // ToUtf8();
const GLchar* theSource = convertedSource;