[PATCH] install toolchain if configurated
[BUGFIX]: the new <subproject>-git option added to the download-y
[BUGFIX]: compute the subdirs to make from the list of intall targets
[BUGFIX]: check the need to install
[BUGFIX]: good toolchain path
[PATCH]: use new project tools
|PATCH]: add usr/lib access in LDFLAGS
[PATCH]: delete object files before to rebuild
[PATCH]: libffi install header files into usr/lib/libffi-3.0.13/include/ instead /usr/include
[BUGFIX]: wayland clean the directory before to configure
[BUGFIX]: library should be inside /lib or /lib/arm-linux-gnueabihf ??? TODO