Simplify the argb alpha get
Dont be on the 1-256 range for lum_get()
Add the copy files
Include the copy file
Remove the copy functions
Add more information
Initial amcros for orc including
Add the blend ops for orc
Simplify the functions
Add orc check
Add a background example
Add a 'times' command line option

It will make things easier for benchmarking the new
orc support
Make sure that it is full opaque
Add more common orc macros
Add references to the orc compistor functions

The place where the orc compositor functions will be is not
defined yet, for now, just add code for them even if the functions
do not exist yet
Remove useless files

Those file make sense when the libargb was a split project
That's not the case anymore
Add the gcda files to the ignore list
Make argb be a real submodule

We will use the _init() function to setup the orc
generic functions
Remove the old test file, no longer needed
TODO--