Put 38400 baud back in serial port speed list

[kurt6string]

I build midi devices from arduinos and 38400 baud is the closest rate to the actual midi rate thus I find it useful for testing in 'human' mode as serial output more closely resembles the midi data rate. Why it would be removed is beyond my understanding in any case.

[matthijskooijman]

@ffissore, you removed some baud rates in dd772f7 and ec67c88. Do you remember why these were labeled as "useless"? Didn't they work?

[PaulStoffregen]

14400 and 28800 aren't supported by some Linux drivers, and the RXTX library handles that lack of support terribly, so they really ought to be removed.

But 38400 is well supported on all systems. It should not be removed.

[dezshredder]

I need 38k4 too. Please add it back.

[d00616]

A lot of hardware is using 38400 Baud. I need it back because SEGGER JLink Serial Port emulations works only on 38400 baud.
Standard baud rates are: 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, 9600, 19200, 38400, 57600, 115200

[tochinet]

I definitely second the need for 38k4. I use it in all my programs. It was a complete surprise for me to see that it's not supported in 1.5 (but it is in 1.0.5 !). I can't understand why some "issues with RXTX and Linux" imply it is removed from all IDEs, but ... kept in the cores, and not documented. Please issue a fix ASAP !

[ffissore]

A preliminary build is available here #2485 (comment)

[ffissore]

Fixed in #2485