Bugfix: Quote paths in run_test.sh
Bugfix: Quote paths in run_test.sh

This fixes a long outstanding regression with the testsuite in
combination with paths containing spaces.

naliboff/dealii,sairajat/dealii,naliboff/dealii,danshapero/dealii,danshapero/dealii,naliboff/dealii,EGP-CIG-REU/dealii,sairajat/dealii,naliboff/dealii,naliboff/dealii,danshapero/dealii,naliboff/dealii,kalj/dealii,danshapero/dealii,sairajat/dealii,EGP-CIG-REU/dealii,sairajat/dealii,sairajat/dealii,naliboff/dealii,EGP-CIG-REU/dealii,EGP-CIG-REU/dealii,kalj/dealii,danshapero/dealii,kalj/dealii,EGP-CIG-REU/dealii,kalj/dealii,kalj/dealii,sairajat/dealii,danshapero/dealii,sairajat/dealii,danshapero/dealii,EGP-CIG-REU/dealii,EGP-CIG-REU/dealii,kalj/dealii,kalj/dealii