Release script no longer tries to keep copies of the ChangeLog and TODO list in the Documentation directory

Add a mouse interface that is similar to the touchscreen interface except that it can handle multple buttons and continuously reports positional data so that it can control a cursor

The USB HID mouse driver is now functional.  There are some usage issues as described in the top-level TODO list

STM32F4 Discovery:  Rename most everything in the board source directory to conform with the ever evolving naming standard

Fix cut'n'paster errors in conditional compilation.  Prevented LM4F120 Launchpad UARTs 2-7 from being used

Update dependencies for CONFIG_BOOT_SDRAM_DATA.  This should not be available if the system boots from SDRAM (via a bootloader)