Round 2 of bug fixes for the Spark skins for Halo components. Thanks to Alex for help with the data grid issues.
SDK-19655 - Setting rowCount property on DataGrid causes extra blank row to be displayed
SDK-19652 - Items in a DataGrid do not line up after scrolling.
SDK-19605 - disabled Halo ColorPicker with Gumbo skin draws too dark
SDK-19596 - When you have a single button on an Alert, the left edge looks flatter than the right
SDK-19585 - Menus compiled with the halo theme in Flex 4 have a different backgroundColor than in Flex 3
SDK-19665 - Halo List with Gumbo skin doesnt draw the alternating item color all the way to the right edge of the control if VScrollBar is present
SDK-19651 - odd header rendering issue on Halo DataGrid with Gumbo skin
QA Notes: The alert layout code was positioning the buttons/text on sub-pixel boundaries if the width or height of the alert was an odd number of pixels. We always snap to pixel boundaries now, but this may cause bitmap compare issues with Alert.