Examples: DirectX9/11: hide os curosr if ImGui is drawing it (#155)

Examples: DirectX9/11: Fixed key mapping for down arrow.

Merge remote-tracking branch 'origin' into 2015-04-indexed-rendering ...

Conflicts:
	examples/directx11_example/imgui_impl_dx11.cpp
	imgui.cpp

Examples: DirectX11: tidying up.

Merge remote-tracking branch 'origin' into 2015-04-indexed-rendering ...

Conflicts:
	examples/directx11_example/imgui_impl_dx11.cpp
	examples/opengl3_example/imgui_impl_glfw_gl3.cpp

Examples: DirectX11: Removed unnecessary vertices conversion and CUSTOMVERTEX types.

Indexed rendering. Not in main branch because breaks rendering code too much. Will merge in trunk along with more major graphics changes lat

Examples: initializing float + missing comment.

Comments on font loading, fixed commented out paths and added DroidSans in the list

Examples: uses SetNextWindowPos/SetNextWindowSize when applicable

Examples: DirectX9: fixed duplicate creation of vertex buffer. Size of static vertex buffer at top of the code.

Examples: Fixed Clang warnings in DirectX examples

Examples: MSVC: increase warning level from /W3 to /W4 for OpenGL examples

Examples: MSVC: increase warning level from /W3 to /W4 for DirectX examples

Examples: Fix includes order to avoid conflicts between DXSDK_DIR and Windows SDK

Examples: Added 64-bit projects for MSVC

Added io.KeyAlt + support in examples apps ...

Currently unused but supported by sample so that more people will have
it set up when menus needs them

Examples: reference implementations honors drawlist user callbacks.

Examples: DirectX9 example cleanup to match DirectX11 structure.

Examples: DirectX11 example application handles window resizing.

Examples: DirectX9 example application handle window resizing.

Examples: Refactored directx11_example to be easier to copy & paste into user application.

Examples: DirectX examples uses WM_KEYDOWN/WM_KEYUP ...

Fixes pressing Enter in IME being caught by application right after
validating an IME input.

Windows: setup a default handler for ImeSetInputScreenPosFn so IME (Japanese/Chinese) inputs are positioned correctly. ...

User need to set io.ImeWindowHandle

Examples: Windows examples don't link with imm32.lib by default.

Renamed ImGuiSetCondition_*** to ImGuiSetCond_*** and ImGuiCondition_FirstUseThisSession to ImGuiCond_Once

Examples: msvc: output .exe in project directory (not in solution directory).

Examples: DirectX examples applications all have a Console for debugging.

Calculate frame-rate for the user, as a purely luxurious feature ...

..and to reduce sample code size a little.

Minor formatting tweaks, comments