* various forms.OGridControlModel tests segfaulted
 * root cause is the migration to stl containers in DbGridControl
 * the old tools container returned the removed pointer or NULL causing no failure
 * a signed int was used as index while the functions returned a unsigned int
 * the GRID_COLUMN_NOT_FOUND magic value was out of the signed range

Simple changes.

It's called the Windows SDK, not the Platform SDK. Link only with the
ws2_32 library, not the wsock32 one.

Plus trailing white space cleanup.

Beeping is too annoying ;-)

Replaces the old color picker with a new one.
Demo: http://www.youtube.com/watch?v=rPu6EmIxkIM