Code cleaning.
fixing g++ warnings
removed Drawable::bgr2rgb()
fix conflits
fixed conflits
Merge branch 'future' of https://github.com/wallix/redemption into newtransport
disable compiler flags
delete throw(Error) specification
enable -Wnull-dereference in clang++
enable and fix compiler flags: -pedantic -Wall -Wextra -Wno-unused-parameter -Wno-long-long