Begin using CMake.
Removed useless header, unused variables and fixed sign conversion.
Removed useless forward declaration.
Made reflex::wrap more gcc friendly.
Removed useless typedef in histogram.
Made reflex helpers gcc friendly.
Made vec_t gcc friendly.
Made math library gcc friendly.
Made fits library gcc friendly.
Made reflex more gcc friendly.
Made astro library more gcc friendly.
Fixed usage of () instead of [] (cosmetic).
Fixed usage of () instead of [] (cosmetic).
Fixed ambiguity in arr(). Simplified implementation of replicate() and
made it gcc friendly (was making gcc hang).
Forgot main CMake file!