Commit 1d9f90b256b5e56a33fcb699f2d6d911bda11417

Con Kolivas 2013-10-14T11:39:15

Revert "Convert the usb callback function to use a cgsem_t using the timedwait code to avoid races with mutexes/conditionals." This reverts commit 433465bcfcd8d9a2270cb27dd0ea933e9fefa829. Not ready yet.