The USB_Host_SendControlRequest() function no longer automatically selects the Control pipe (pipe 0), so that other control type pipes can be used with the function.

The USB Host management task now saves and restores the currently selected pipe before and after the task completes.

Removed all binary constants and replaced with decimal or hexadecimal constants so that unpatched GCC compilers can still build the code without having to be itself patched and recompiled first.

All comments in the library, bootloaders, demos and projects have now been spell-checked and spelling mistakes/typos corrected.