Added optional options to head.x program for reducing memory usage.



git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@11089 c92efa57-630b-4861-b058-cf58834340f0
Added optional options to head.x program for reducing memory usage.



git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@11090 c92efa57-630b-4861-b058-cf58834340f0
One part was still missing.



git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@11091 c92efa57-630b-4861-b058-cf58834340f0