Updated the CPTAxisLabel unit tests to match the new -pixelAlign behavior.
Updated the CPTAxisLabel unit tests to match the new -pixelAlign behavior.

kamalvenkat/core-plot,kamalvenkat/core-plot,eoinnorris/core-plot,divyavamsee/core-plot,sureshdustrise/core-plot,eoinnorris/core-plot,divyavamsee/core-plot,zenXian/core-plot,eoinnorris/core-plot,sureshdustrise/core-plot,tectronics/core-plot,sureshdustrise/core-plot,zenXian/core-plot,divyavamsee/core-plot,kamalvenkat/core-plot,tectronics/core-plot,eoinnorris/core-plot,zenXian/core-plot,divyavamsee/core-plot,LiDechao/core-plot,tectronics/core-plot,LiDechao/core-plot,zenXian/core-plot,tectronics/core-plot,sureshdustrise/core-plot,LiDechao/core-plot,kamalvenkat/core-plot,LiDechao/core-plot