Add conditional compilation of forward compat. glfw window hint to fix crash on later versions of OSX

ImFontAtlas: doesn't clear input data, left to the application. (#224)

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

Examples: OpenGL3: backup/restore current program and texture #195

Set modifier key state by inspecting imgui's io.KeysDown array.

Examples: Simplified GLFW keyboard callbacks

Merge branch 'master' of https://github.com/Roflraging/imgui into Roflraging-master

Simplified glfw keyboard callbacks.

Examples: OpenGL3: Tweaks (argh, github ui)

Examples: OpenGL3: Tweaks.

Fixed modifier key state setting in GLFW callbacks.

Examples: initializing float + missing comment.

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

Examples: Terser code + added commented out glUseProgram(0( suggestion in OpenGL2 sample.

OpenGL/GLFW: hide system cursor if imgui is soft-rendering cursor

typo ImGui_ImplGlfwGL3_KeyCallback()

Examples: uses SetNextWindowPos/SetNextWindowSize when applicable

Removed extraneous spaces

opengl3+opengl example: if content window doesn't have focus, tell ImGui we don't have a mouse position. e.g. avoids tooltips popping up in imgui app when you're interacting with a different app window that overlaps it.

Examples: Fixed Makefile

Examples: Fixed Makefile

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

Examples: Added 64-bit projects for MSVC

Examples: Moved GLFW/GL3W to a common libs/ folder

Examples: Updated to GLFW 3.1

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: OpenGL 2/3 examples cleanup to match DirectX9/11 structure.

Examples: Clang warning fix.

Examples: Makefile fixes.