patch #7010: Win32 enhanced bitbang_delay
* bitbang.c (bitbang_calibrate_delay, bitbang_delay): On Win32,
use the high-resolution performance counter rather than the
uneducated delay loop guess if it is available on the target
hardware.
git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk@894 81a1dc3b-b13d-400b-aceb-764788c761c2