Centre of bullseye in Maxicode symbols drifted from desired position
when printing scale was increased. Affects raster plotted images (BMP, GIF etc.).
Changes how centre position of bullseye is calculated.
[backend/bmp.c:133]: (error) Memory leak: bitmap
[backend/bmp.c:126]: (error) Memory leak: bitmap
[backend/composite.c:464]: (error) Array index -1 is out of bounds.
[backend/composite.c:507]: (error) Array index -1 is out of bounds.
[backend/dmatrix.c:962]: (style) Redundant condition: i!=0. 'i==0 || (i!=0 && binary[i-1]!='b')' is equivalent to 'i==0 || binary[i-1]!='b''
[backend/raster.c:122]: (error) Memory leak: rotated_pixbuf
[backend/raster.c:506]: (error) Memory leak: pixelbuf
[frontend/main.c:273]: (error) Uninitialized variable: format_string
[frontend_qt/exportwindow.cpp:103]: (style) Array index 'j' is used before limits check.