[trunk] updated BMP format input support

Update  issue 203
[trunk] updated BMP format input support

Update  issue 203
[trunk] fixed compression check for 1 bit unsigned component (fixes issue 457)
[trunk] fixed component precision upscaling in opj_decompress (fixes issue 458)
[trunk] fixed colorspace mapping for raw grayscale images (fixes issue 456)
[trunk] removed warning from convertbmp.c

Update  issue 442