Reviewed VS2015 UWP project

- Support OpenGL 1.1 if selected macro
- Corrected MSVC compiler issues with (void *) data
- Removed raylib.dll project
- Created DEBUG_DLL and RELEASE_DLL configurations

Mouse input is implemented, with all bells-and-whistles. This includes
cursor locking and scroll wheel support.

Keyboard input is reverted to a callback model to better reflect the
existing architecture in "core.c"

This removes the binary files I accidentally tacked onto the "Add keyboard input" commit

Removed GLFW3 and OpenAL Soft dependencies

Add a basic UWP gampead poll function with zero changes to code outside of App.cpp

Support Universal Windows Platform (UWP):
- Windows 10 App
- Windows Phone
- Xbox One

C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\bin>dumpbin.exe
D:\GitHub\raylib\release\libs\win32\msvc\raylib.dll /DEPENDENTS

Microsoft (R) COFF/PE Dumper Version 14.00.24215.1
Copyright (C) Microsoft Corporation.  All rights reserved.

Dump of file D:\GitHub\raylib\release\libs\win32\msvc\raylib.dll

File Type: DLL

Image has the following dependencies:

KERNEL32.dll
glfw3.dll
OpenAL32.dll

Summary

4000 .data
1000 .gfids
23000 .rdata
5000 .reloc
1000 .rsrc
68000 .text
1000 _RDATA

Added support for raylib DLL building on MSVC

That's just a reference file, needs review

It could be added in a future if required...