BUG 0012898. Fix texture coordinates for vtkTextActor.
BUG 0012898. Fix texture coordinates for vtkTextActor.

This patch undoes the fix for bug 12898. The texture coordinate
fix was coincidental, the real issue was an improperly calculated
bounding box, which was fixed in 5fff9333c. This patch also fixes
issues with rotated text and other cases where bbox_text[0] < 0.0.

This patch has been tested against Paraview and the issue with
clipped text has indeed been fixed by 5fff9333c.

Change-Id: If0496e90a4ddce6329cbde300792e23096d25455

keithroe/vtkoptix,jmerkow/VTK,berendkleinhaneveld/VTK,candy7393/VTK,jmerkow/VTK,berendkleinhaneveld/VTK,aashish24/VTK-old,biddisco/VTK,hendradarwin/VTK,johnkit/vtk-dev,ashray/VTK-EVM,gram526/VTK,demarle/VTK,msmolens/VTK,mspark93/VTK,collects/VTK,hendradarwin/VTK,sankhesh/VTK,hendradarwin/VTK,candy7393/VTK,collects/VTK,ashray/VTK-EVM,demarle/VTK,SimVascular/VTK,keithroe/vtkoptix,aashish24/VTK-old,sankhesh/VTK,hendradarwin/VTK,keithroe/vtkoptix,gram526/VTK,candy7393/VTK,johnkit/vtk-dev,SimVascular/VTK,SimVascular/VTK,jmerkow/VTK,mspark93/VTK,gram526/VTK,aashish24/VTK-old,keithroe/vtkoptix,johnkit/vtk-dev,ashray/VTK-EVM,johnkit/vtk-dev,gram526/VTK,msmolens/VTK,gram526/VTK,candy7393/VTK,collects/VTK,jmerkow/VTK,mspark93/VTK,demarle/VTK,keithroe/vtkoptix,biddisco/VTK,aashish24/VTK-old,candy7393/VTK,msmolens/VTK,sankhesh/VTK,candy7393/VTK,sankhesh/VTK,sumedhasingla/VTK,demarle/VTK,berendkleinhaneveld/VTK,hendradarwin/VTK,msmolens/VTK,jmerkow/VTK,johnkit/vtk-dev,collects/VTK,mspark93/VTK,sankhesh/VTK,gram526/VTK,berendkleinhaneveld/VTK,biddisco/VTK,sumedhasingla/VTK,sumedhasingla/VTK,ashray/VTK-EVM,biddisco/VTK,sankhesh/VTK,jmerkow/VTK,biddisco/VTK,sumedhasingla/VTK,ashray/VTK-EVM,berendkleinhaneveld/VTK,mspark93/VTK,ashray/VTK-EVM,sumedhasingla/VTK,demarle/VTK,berendkleinhaneveld/VTK,keithroe/vtkoptix,candy7393/VTK,demarle/VTK,msmolens/VTK,SimVascular/VTK,ashray/VTK-EVM,biddisco/VTK,SimVascular/VTK,sumedhasingla/VTK,keithroe/vtkoptix,sumedhasingla/VTK,SimVascular/VTK,biddisco/VTK,hendradarwin/VTK,mspark93/VTK,demarle/VTK,candy7393/VTK,mspark93/VTK,sankhesh/VTK,sankhesh/VTK,aashish24/VTK-old,johnkit/vtk-dev,collects/VTK,msmolens/VTK,gram526/VTK,ashray/VTK-EVM,msmolens/VTK,demarle/VTK,keithroe/vtkoptix,gram526/VTK,SimVascular/VTK,SimVascular/VTK,sumedhasingla/VTK,mspark93/VTK,aashish24/VTK-old,jmerkow/VTK,hendradarwin/VTK,collects/VTK,berendkleinhaneveld/VTK,johnkit/vtk-dev,msmolens/VTK,jmerkow/VTK