Update sparkDML.sh parameters and path handling
Update sparkDML.sh parameters and path handling

Update sparkDML.sh to remove some hard-coded parameters and fix a path of SystemML configuration in spark-submit command-line options.
Fix setting SYSTEMML_HOME and revert default parameters and location of SystemML-config.xml.
Change building spark configuration parameters and setting default parameters.

Closes #19.

gweidner/incubator-systemml,nakul02/systemml,gweidner/incubator-systemml,deroneriksson/systemml,sandeep-n/incubator-systemml,nakul02/incubator-systemml,nakul02/systemml,fschueler/incubator-systemml,dusenberrymw/systemml,dusenberrymw/systemml,deroneriksson/incubator-systemml,iyounus/incubator-systemml,asurve/systemml,asurve/incubator-systemml,akchinSTC/systemml,asurve/incubator-systemml,apache/incubator-systemml,fschueler/incubator-systemml,deroneriksson/incubator-systemml,dhutchis/systemml,dusenberrymw/systemml,dusenberrymw/incubator-systemml,asurve/systemml,deroneriksson/systemml,deroneriksson/systemml,nakul02/incubator-systemml,gweidner/incubator-systemml,dhutchis/systemml,nakul02/systemml,dhutchis/systemml,gweidner/systemml,dhutchis/systemml,gweidner/incubator-systemml,niketanpansare/systemml,nakul02/systemml,dusenberrymw/incubator-systemml,deroneriksson/systemml,deroneriksson/systemml,apache/incubator-systemml,akchinSTC/systemml,akchinSTC/systemml,asurve/arvind-sysml2,asurve/systemml,gweidner/incubator-systemml,iyounus/incubator-systemml,Wenpei/incubator-systemml,dhutchis/systemml,deroneriksson/incubator-systemml,iyounus/incubator-systemml,niketanpansare/systemml,nakul02/systemml,sandeep-n/incubator-systemml,gweidner/systemml,asurve/arvind-sysml2,asurve/arvind-sysml2,fschueler/incubator-systemml,deroneriksson/incubator-systemml,nakul02/incubator-systemml,dusenberrymw/incubator-systemml,deroneriksson/systemml,iyounus/incubator-systemml,niketanpansare/systemml,iyounus/incubator-systemml,dusenberrymw/systemml,Wenpei/incubator-systemml,niketanpansare/incubator-systemml,niketanpansare/incubator-systemml,nakul02/incubator-systemml,niketanpansare/systemml,akchinSTC/systemml,apache/incubator-systemml,gweidner/incubator-systemml,deroneriksson/incubator-systemml,iyounus/incubator-systemml,asurve/arvind-sysml2,gweidner/systemml,akchinSTC/systemml,asurve/systemml,sandeep-n/incubator-systemml,dusenberrymw/incubator-systemml,dusenberrymw/incubator-systemml,asurve/arvind-sysml2,apache/incubator-systemml,apache/incubator-systemml,apache/incubator-systemml,gweidner/systemml,nakul02/incubator-systemml,akchinSTC/systemml,dusenberrymw/systemml,asurve/incubator-systemml,asurve/arvind-sysml2,niketanpansare/incubator-systemml,asurve/systemml,nakul02/systemml,dhutchis/systemml,Wenpei/incubator-systemml,dusenberrymw/incubator-systemml,gweidner/systemml,asurve/systemml,gweidner/systemml,asurve/incubator-systemml,niketanpansare/incubator-systemml,fschueler/incubator-systemml,niketanpansare/systemml,niketanpansare/systemml,dusenberrymw/systemml,deroneriksson/incubator-systemml,sandeep-n/incubator-systemml,asurve/incubator-systemml,Wenpei/incubator-systemml,asurve/incubator-systemml,nakul02/incubator-systemml