WinCE: Fix missing sources from dist tarball
OS X: Don't assume an interval of 1
libusbx 1.0.15-rc2
Core: fix bug in libusb_has_capability()

The problem was detected by clang on Mac OS X:
warning: use of logical '&&' with constant operand [-Wconstant-logical-operand]
note: use '&' for a bitwise operation

We want to use a bitwise operation and not a logical operation.