Franck79/OpenOCD_new — pull request #1 by mczerski (2012-11-23 08:42:08+00:00)
Title: Proposed changes

as for the last commit it was inspired by this thread:
http://libusb.6.n5.nabble.com/Slow-USB-bulk-transfer-td1818.html

multiple calls to ftdi_bulk_wrtie with only 64 bytes has very poor performance,
making calls with large buffers instead make it very roubust, and that large buffer is split into 64 bytes chunks in kernel space.