picoC: allowed higher baud rates, bug fix

system.h: allows higher baud rates on USART.
flightbatterystate.h: bug fix at FlightStatusGet()
picoC: change baud rate to unsigned long
picoC: add timeout requester

This adds a time out requester to inform users when a command from gcs
widget fails. This happens when a script is running or the module is
disabled.
picoC: add pathdesired.h and pathstatus.h

This adds access to UAVOs PathDesired and PathStatus. Now picoC can
used for advanced waypoint navigation and autonomous searching tasks.
Just switch to PH, modify the PathDesired object and the Pathfollower
will do the rest.
picoC: add PathDesiredMode

add missing PathDesiredMode value
picoC: small type fix at ChangeBaud()

Changes the LongInteger to UnsignedLongInteger in ChangeBaud()-function.
picoC: add USART functions

Add SendBuffer() and ReceiveBuffer() functions. This makes it possible
to transfer unformatted buffers as fast as possible.
picoC: change return type

changes ReturnValue type from Integer to LongInteger as defined.
qwt: update to 6.1.1
qwt: more files from updating to qwt 6.1.1
qwt: remove outdated constants

This is a pending change from qwt-6.1.2, and is needed to
support Qt 5.4
qwt: update qwt qmake files to build and link properly

fixes the target name, drops some unnecessary constants, etc.
scopes: adapt to renamed qwt 6.1 'set*Pen' methods
scopes: updates for qwt 6.1.1

There should be no change in functionality. How we interact
between the legend and plots had to change.
CopterControl: increase eventdispatcher size

This was running out of memory.
Merge pull request #1375 from peabody124/coptercontrol_eventdispatcher

CopterControl: increase eventdispatcher size
Release: tag windows portable and installers separately
Autotune: fix typo in UI
Bootloader: allow altering the startup delay

For boards without a vsense pin, it is necessary to have
sufficient delay to allow enumaration (500 ms). For boards
with a VSENSE pin this can be overridden to a shorter
period.
Sparky: use 2 ms bootloader delay

This allows Spektrum binding. Also, it bumps the bootloader
revision to 0x83.