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Correct which executable gets run for OpenGL 3 tests

See merge request !16

Add a layer for OpenGL version 3

See merge request !15

Rather than sending textures to the OpenGL 3 callback and requiring the
callback to rebuild the framebuffer every time, create the framebuffer
internally inside of IceT and pass the framebuffer id to the callback.

I am also binding the framebuffer before the call. I don't know if it is
necessary to both set the framebuffer and pass the framebuffer id.

Added a new library for interfacing IceT with OpenGL version 3. A lot
has changed with OpenGL since IceT was first written. This device layer
relies less on a fixed function pipeline and instead uses the OpenGL
device to transfer data back and forth more than anything.

The current render creates OpenGL textures and passes their identifiers
to the callback. The callback is expected to fill those textures with
the rendering.

Other types of callback could be created in the future.

Previously, we only had one render layer (OpenGL). We are about to
introduce a new render layer (based on new features with OpenGL 3), and
they will be sharing state variables. I cannot think of any practical
reason to use two different rendering layers at once, so the render
layers will share state variables.

To make that work, add a new reserved state variable to identify which
render layer is being used. Each render layer should first check to make
sure that no other render layer has grabbed the context.

remove -ansi C Flag: enables C++ style comments

See merge request !14

Install development header files

See merge request !13

Install the header files named `IceTDev*`. These are not typically
needed by using applications, but required if you want to provide your
own communicator.

windows: use the proper preprocessor definitions for detecting Windows

See merge request !12

Make default ICET_MAX_IMAGE_SPLIT higher

See merge request !11

Move the default ICET_MAX_IMAGE_SPLIT from 512 to a much higher 500000.
The initial value was based on some timings on Intrepid (a BlueGene).
However, I have not seem the same benefit on other architectures, so in
the spirit of do no harm I'm raising this back up. Perhaps with some
more data I will move it back down again.

Update required version of CMake

See merge request !10

Remove some old cruft that is fairly obsolete.

Add ICET_IMAGE_COLOR_RGB_FLOAT color format

See merge request !9

Also removed whitespace at the end of generated manpages.

Adds a color format that stores 3 channel RGB colors as floats. This is
really only good for z-buffer compositing.

Update finding glfw

See merge request !8

For the latest version of the glfw library, you need to find a packaged
named glfw3 (not GLFW).

Fix warnings on MSVC

See merge request !5

The GNU compiler is being strict about POSIX compliance. Explicitly
port those things outside of POSIX (like snprintf).

Most of the warnings are about using "unsafe" functions. In addition to
replacing string functions like strcpy with counting strncpy versions,
which makes sense, older MSVC versions for some reason don't support
POSIX versions of these functions. Instead, they have their weird
offshoots, which is a pain.

Fix issues with unused variables

See merge request !7

Update the diagnostics macros

See merge request !6

The new version now uses variadic template macros to allow you to do
printf-style messages. This is how I wanted it to begin with, but as I
recall variadic templates were not supported on all compilers at the
time I started IceT. At this point, I think they are supported on pretty
much any compiler in the last 10 years.

You have to set up a target property to say the "runtime" should go in
the build directory, which is annoying.

Fix dashboard warning when glut is not found.



See merge request !4

Fix compilation errors

Compilation error on Visual Studio 10 Win 64.
Fix undefined symbol: TEST_NOT_PASSED

See merge request !3

Compilation error on Visual Studio 10 Win 64.
Fix undefined symbol: TEST_NOT_PASSED

Add off-screen rendering through EGL



See merge request !2

Update README

Moving README to README.md and updating formatting.

See merge request !1