Use AS_IF, AS_CASE in vtk.m4
Use AS_IF, AS_CASE in vtk.m4

hrittich/libmesh,pbauman/libmesh,jwpeterson/libmesh,BalticPinguin/libmesh,pbauman/libmesh,roystgnr/libmesh,90jrong/libmesh,capitalaslash/libmesh,90jrong/libmesh,90jrong/libmesh,roystgnr/libmesh,libMesh/libmesh,libMesh/libmesh,libMesh/libmesh,BalticPinguin/libmesh,jwpeterson/libmesh,pbauman/libmesh,hrittich/libmesh,giorgiobornia/libmesh,giorgiobornia/libmesh,jwpeterson/libmesh,giorgiobornia/libmesh,pbauman/libmesh,BalticPinguin/libmesh,90jrong/libmesh,dschwen/libmesh,dschwen/libmesh,roystgnr/libmesh,capitalaslash/libmesh,BalticPinguin/libmesh,dschwen/libmesh,dschwen/libmesh,roystgnr/libmesh,hrittich/libmesh,libMesh/libmesh,pbauman/libmesh,dschwen/libmesh,pbauman/libmesh,pbauman/libmesh,hrittich/libmesh,90jrong/libmesh,hrittich/libmesh,BalticPinguin/libmesh,jwpeterson/libmesh,pbauman/libmesh,jwpeterson/libmesh,giorgiobornia/libmesh,90jrong/libmesh,roystgnr/libmesh,dschwen/libmesh,90jrong/libmesh,capitalaslash/libmesh,BalticPinguin/libmesh,capitalaslash/libmesh,capitalaslash/libmesh,giorgiobornia/libmesh,BalticPinguin/libmesh,dschwen/libmesh,giorgiobornia/libmesh,roystgnr/libmesh,libMesh/libmesh,hrittich/libmesh,libMesh/libmesh,90jrong/libmesh,capitalaslash/libmesh,capitalaslash/libmesh,hrittich/libmesh,hrittich/libmesh,pbauman/libmesh,roystgnr/libmesh,libMesh/libmesh,90jrong/libmesh,hrittich/libmesh,libMesh/libmesh,BalticPinguin/libmesh,jwpeterson/libmesh,jwpeterson/libmesh,capitalaslash/libmesh,giorgiobornia/libmesh,giorgiobornia/libmesh,giorgiobornia/libmesh,roystgnr/libmesh,dschwen/libmesh,jwpeterson/libmesh