Patch gl2ps.c to compress long strings.
Patch gl2ps.c to compress long strings.

Patch submitted upstream.

Change-Id: Ic14953a891fc4935df860c67ff13fc3ee12065f0

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