A tft addin for pbp3

[richard]

still fiddling with things , changed external flash routines to expect a 32 byte header in the image file ( x y size and image name), moved all external flash routines to flash pbpmod file.
have uploaded a python2.7 gui pgm to convert 565c image data and add the header , then transfer data to flash via eusart2 @38400 baud . the python code can also erase blocks/read blocks and convert files to bas format (with or without header). (note its set to use com27 edit file to suit your system) all the pic routines are in the flash pbpmod file. this demo has it all setup .

have also made a touch screen addin , that is also included in this demo