remove tabs
add missin copyright notice
only build pgsql2sqlite if pg_config is available
fix several -Wsign-compare warnings
Add currently failing test for #2000
fix unsigned integer overflow when passing args to composite_bitmap
fix unsigned integer overflow warnings in agg - refs #1679
expose mapnik.Color.packed to get unsigned rgba value
tests: use black background in test
fix one clear case of unsigned overflow in comp_op_rgba_minus - refs #1679
rename the agg int overflow test so it actually runs under nose
benchmark: add conv_clip_polygon + very basic validation for clipping tests
benchmark: add new rendering test harness and use to compare clipping impact on speeds at high and low zoom
fix span_image_resample_rgba
avoid integer overflows in agg by using clamping in agg:iround with agg::rasterizer_sl_clip_int_sat - closes #2000
add xml needed for f91ae9f51c7aab
add note about #2000 to changelog
Merge remote-tracking branch 'origin/2.3.x'
merge with 2.3.x branch