move/remove duplicate files

--HG--
extra : histedit_source : 708b85164101f7e4bbdcc188bb443d4547911dca
removed reference link to missing file

--HG--
extra : histedit_source : d9be944e0c62f6e59ed2d11127b81a85ad2e5291
fixed bad reference links

--HG--
extra : histedit_source : b9f41458d5aa01a067e5fdc4206720c055c9690c
added flexbox build scripts

--HG--
extra : histedit_source : c4a2457ef9ee2c7f8ec662496c7100c8a27519ff