BUG: Fix parsing of linux 2.6 /proc/meminfo format
BUG: Fix parsing of linux 2.6 /proc/meminfo format

Previously KWSys SystemInformation parsed this file assuming a strict
order and set of fields, but the order is not reliable.  This
generalizes the implementation to support any order and extra fields.

sumedhasingla/VTK,collects/VTK,johnkit/vtk-dev,berendkleinhaneveld/VTK,msmolens/VTK,ashray/VTK-EVM,sankhesh/VTK,spthaolt/VTK,msmolens/VTK,spthaolt/VTK,mspark93/VTK,berendkleinhaneveld/VTK,jmerkow/VTK,candy7393/VTK,berendkleinhaneveld/VTK,mspark93/VTK,arnaudgelas/VTK,jeffbaumes/jeffbaumes-vtk,hendradarwin/VTK,candy7393/VTK,arnaudgelas/VTK,keithroe/vtkoptix,berendkleinhaneveld/VTK,candy7393/VTK,SimVascular/VTK,collects/VTK,candy7393/VTK,SimVascular/VTK,biddisco/VTK,ashray/VTK-EVM,gram526/VTK,biddisco/VTK,biddisco/VTK,johnkit/vtk-dev,daviddoria/PointGraphsPhase1,sankhesh/VTK,candy7393/VTK,cjh1/VTK,collects/VTK,Wuteyan/VTK,candy7393/VTK,SimVascular/VTK,arnaudgelas/VTK,sumedhasingla/VTK,sankhesh/VTK,hendradarwin/VTK,johnkit/vtk-dev,hendradarwin/VTK,hendradarwin/VTK,gram526/VTK,keithroe/vtkoptix,mspark93/VTK,msmolens/VTK,jeffbaumes/jeffbaumes-vtk,sumedhasingla/VTK,johnkit/vtk-dev,demarle/VTK,demarle/VTK,spthaolt/VTK,keithroe/vtkoptix,arnaudgelas/VTK,jmerkow/VTK,sankhesh/VTK,demarle/VTK,candy7393/VTK,berendkleinhaneveld/VTK,SimVascular/VTK,keithroe/vtkoptix,msmolens/VTK,hendradarwin/VTK,sumedhasingla/VTK,mspark93/VTK,Wuteyan/VTK,ashray/VTK-EVM,collects/VTK,hendradarwin/VTK,gram526/VTK,cjh1/VTK,keithroe/vtkoptix,biddisco/VTK,jeffbaumes/jeffbaumes-vtk,sankhesh/VTK,johnkit/vtk-dev,jmerkow/VTK,demarle/VTK,ashray/VTK-EVM,biddisco/VTK,msmolens/VTK,arnaudgelas/VTK,jmerkow/VTK,jmerkow/VTK,daviddoria/PointGraphsPhase1,SimVascular/VTK,collects/VTK,biddisco/VTK,aashish24/VTK-old,mspark93/VTK,Wuteyan/VTK,jeffbaumes/jeffbaumes-vtk,jeffbaumes/jeffbaumes-vtk,naucoin/VTKSlicerWidgets,SimVascular/VTK,mspark93/VTK,gram526/VTK,spthaolt/VTK,msmolens/VTK,gram526/VTK,aashish24/VTK-old,ashray/VTK-EVM,johnkit/vtk-dev,collects/VTK,SimVascular/VTK,demarle/VTK,SimVascular/VTK,cjh1/VTK,jmerkow/VTK,naucoin/VTKSlicerWidgets,daviddoria/PointGraphsPhase1,ashray/VTK-EVM,sumedhasingla/VTK,keithroe/vtkoptix,gram526/VTK,cjh1/VTK,naucoin/VTKSlicerWidgets,keithroe/vtkoptix,berendkleinhaneveld/VTK,sankhesh/VTK,Wuteyan/VTK,berendkleinhaneveld/VTK,sankhesh/VTK,Wuteyan/VTK,aashish24/VTK-old,daviddoria/PointGraphsPhase1,demarle/VTK,sumedhasingla/VTK,jmerkow/VTK,gram526/VTK,cjh1/VTK,naucoin/VTKSlicerWidgets,gram526/VTK,cjh1/VTK,naucoin/VTKSlicerWidgets,aashish24/VTK-old,mspark93/VTK,demarle/VTK,jeffbaumes/jeffbaumes-vtk,jmerkow/VTK,msmolens/VTK,daviddoria/PointGraphsPhase1,hendradarwin/VTK,ashray/VTK-EVM,sumedhasingla/VTK,biddisco/VTK,Wuteyan/VTK,sankhesh/VTK,spthaolt/VTK,spthaolt/VTK,johnkit/vtk-dev,naucoin/VTKSlicerWidgets,msmolens/VTK,mspark93/VTK,daviddoria/PointGraphsPhase1,keithroe/vtkoptix,arnaudgelas/VTK,candy7393/VTK,demarle/VTK,sumedhasingla/VTK,Wuteyan/VTK,spthaolt/VTK,aashish24/VTK-old,ashray/VTK-EVM,aashish24/VTK-old