improved syntax on foreign keys to make it more compatible with mysql; also order DROP TABLE to make mysql dump work properly
improved syntax on foreign keys to make it more compatible with mysql; also order DROP TABLE to make mysql dump work properly

--HG--
extra : convert_revision : b05667c380c9252a2c772709e40ee54d30a90f51

florianhauer/ompl,davetcoleman/ompl,utiasASRL/batch-informed-trees,sonny-tarbouriech/ompl,davetcoleman/ompl,sonny-tarbouriech/ompl,jvgomez/ompl,utiasASRL/batch-informed-trees,davetcoleman/ompl,utiasASRL/batch-informed-trees,sonny-tarbouriech/ompl,utiasASRL/batch-informed-trees,davetcoleman/ompl,jvgomez/ompl,sonny-tarbouriech/ompl,davetcoleman/ompl,florianhauer/ompl,davetcoleman/ompl,florianhauer/ompl,utiasASRL/batch-informed-trees,jvgomez/ompl,florianhauer/ompl,jvgomez/ompl,jvgomez/ompl,utiasASRL/batch-informed-trees,sonny-tarbouriech/ompl,jvgomez/ompl,florianhauer/ompl,sonny-tarbouriech/ompl,florianhauer/ompl