Needed for openocd 0.7.0 (added in the next commit). NOTE: There is also a libftdi 1.0 version, but openocd only needs 0.20 so I didn't bother. (libftdi 1.0 uses CMake build system and has lots of changes.)
svn path=/nixpkgs/trunk/; revision=21139
svn path=/nixpkgs/trunk/; revision=17407