Examples: OpenGL: fix for retina screens + io.DisplayFramebufferScale storage (#287)

Revert "Examples: GLFW: using glfwSetCharModsCallback() to ensure characters aren't passed when using mods (fix #279)" ...

This reverts commit d808691.

Examples: GLFW: using glfwSetCharModsCallback() to ensure characters aren't passed when using mods (fix #279)

Minor Windows adjustments

AA branch: Agressively renamed all fields of ImDrawList, ImDrawCmd, ImDrawData to match the rest of our coding convention (#133)

Merge remote-tracking branch 'origin' into 2015-03-antialiased-primitives ...

Conflicts:
	examples/directx11_example/imgui_impl_dx11.cpp
	examples/directx9_example/imgui_impl_dx9.cpp
	examples/opengl3_example/imgui_impl_glfw_gl3.cpp
	examples/opengl_example/imgui_impl_glfw.cpp
	imgui.cpp

Removed the majority of size_t from the code. ImVector<> now uses int. (#262) ...

May trigger new compilation warnings?

AA branch: ImDrawList: rename commands to cmd_buffer ...

Not strictly necessary but while we're doing minor breakage let's do
them at all once.

AA branch: ImDrawCmd idx_count -> elem_count

AA branch: io.RenderDrawListsFn signature changed to take ImDrawData, neater and future proof breaking of the render API (#133 #254)

Merge remote-tracking branch 'origin' into 2015-03-antialiased-primitives ...

Conflicts:
	examples/opengl_example/imgui_impl_glfw.cpp

Fixed warnings for more pedantic settings (#258)

Merge remote-tracking branch 'origin' into 2015-03-antialiased-primitives

Added ImGuiKey_PageUp, ImGuiKey_PageDown for user.

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

Conflicts:
	imgui.cpp
	imgui.h

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

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

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

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

Conflicts:
	imgui.cpp

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

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

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

Examples: Simplified GLFW keyboard callbacks

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

Simplified glfw keyboard callbacks.

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

Examples: OpenGL fixed-pipeline: added glBindTexture(0), via Anton M

Fixed modifier key state setting in GLFW callbacks.

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

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

Removed extraneous spaces