fmbtgti: support OIR parameters in .fmbtoirrc file

.fmbtoirrc defines default optical image recognition parameters for all
bitmaps in the same directory. For instance, instead of repeating
tapBitmap("foo.png", colorMatch = 0.75), you can add colorMatch = 0.75
line in .fmbtoirrc in the same directory as foo.png. This applies to all
fmbtandroid, fmbttizen, fmbtx11 and fmbtvnc.