Don't allow an implicit conversion of a mapping object to a mapping collection, since this leads to taking references to temporary objects (see step-21 before today's changes).
Don't allow an implicit conversion of a mapping object to a mapping
collection, since this leads to taking references to temporary objects
(see step-21 before today's changes).


git-svn-id: 31d9d2f6432a47c86a3640814024c107794ea77c@12373 0785d39b-7218-0410-832d-ea1e28bc413d

msteigemann/dealii,shakirbsm/dealii,YongYang86/dealii,msteigemann/dealii,spco/dealii,angelrca/dealii,ibkim11/dealii,jperryhouts/dealii,ibkim11/dealii,naliboff/dealii,rrgrove6/dealii,maieneuro/dealii,flow123d/dealii,mtezzele/dealii,sriharisundar/dealii,adamkosik/dealii,mac-a/dealii,Arezou-gh/dealii,nicolacavallini/dealii,nicolacavallini/dealii,lue/dealii,sriharisundar/dealii,lpolster/dealii,naliboff/dealii,Arezou-gh/dealii,gpitton/dealii,kalj/dealii,johntfoster/dealii,kalj/dealii,naliboff/dealii,maieneuro/dealii,lue/dealii,kalj/dealii,andreamola/dealii,YongYang86/dealii,Arezou-gh/dealii,sriharisundar/dealii,sriharisundar/dealii,pesser/dealii,rrgrove6/dealii,kalj/dealii,shakirbsm/dealii,sairajat/dealii,Arezou-gh/dealii,EGP-CIG-REU/dealii,natashasharma/dealii,msteigemann/dealii,mtezzele/dealii,mtezzele/dealii,ESeNonFossiIo/dealii,johntfoster/dealii,spco/dealii,johntfoster/dealii,rrgrove6/dealii,YongYang86/dealii,johntfoster/dealii,msteigemann/dealii,andreamola/dealii,natashasharma/dealii,shakirbsm/dealii,YongYang86/dealii,johntfoster/dealii,danshapero/dealii,pesser/dealii,YongYang86/dealii,jperryhouts/dealii,gpitton/dealii,maieneuro/dealii,rrgrove6/dealii,lue/dealii,spco/dealii,rrgrove6/dealii,nicolacavallini/dealii,sriharisundar/dealii,lpolster/dealii,mac-a/dealii,sairajat/dealii,rrgrove6/dealii,mtezzele/dealii,sairajat/dealii,gpitton/dealii,angelrca/dealii,andreamola/dealii,danshapero/dealii,gpitton/dealii,mtezzele/dealii,Arezou-gh/dealii,spco/dealii,JaeryunYim/dealii,JaeryunYim/dealii,adamkosik/dealii,spco/dealii,msteigemann/dealii,jperryhouts/dealii,ESeNonFossiIo/dealii,gpitton/dealii,mac-a/dealii,natashasharma/dealii,maieneuro/dealii,lue/dealii,naliboff/dealii,shakirbsm/dealii,naliboff/dealii,EGP-CIG-REU/dealii,flow123d/dealii,ESeNonFossiIo/dealii,pesser/dealii,ESeNonFossiIo/dealii,jperryhouts/dealii,EGP-CIG-REU/dealii,shakirbsm/dealii,JaeryunYim/dealii,naliboff/dealii,kalj/dealii,ESeNonFossiIo/dealii,jperryhouts/dealii,ESeNonFossiIo/dealii,adamkosik/dealii,angelrca/dealii,lpolster/dealii,Arezou-gh/dealii,EGP-CIG-REU/dealii,JaeryunYim/dealii,sriharisundar/dealii,kalj/dealii,johntfoster/dealii,adamkosik/dealii,spco/dealii,mac-a/dealii,sairajat/dealii,lpolster/dealii,flow123d/dealii,shakirbsm/dealii,sairajat/dealii,natashasharma/dealii,rrgrove6/dealii,YongYang86/dealii,maieneuro/dealii,mtezzele/dealii,angelrca/dealii,natashasharma/dealii,lpolster/dealii,pesser/dealii,johntfoster/dealii,JaeryunYim/dealii,danshapero/dealii,mtezzele/dealii,maieneuro/dealii,natashasharma/dealii,andreamola/dealii,flow123d/dealii,sairajat/dealii,naliboff/dealii,Arezou-gh/dealii,nicolacavallini/dealii,ibkim11/dealii,ESeNonFossiIo/dealii,lpolster/dealii,sairajat/dealii,danshapero/dealii,danshapero/dealii,gpitton/dealii,msteigemann/dealii,danshapero/dealii,spco/dealii,mac-a/dealii,sriharisundar/dealii,andreamola/dealii,pesser/dealii,lue/dealii,ibkim11/dealii,mac-a/dealii,mac-a/dealii,flow123d/dealii,adamkosik/dealii,andreamola/dealii,msteigemann/dealii,lue/dealii,nicolacavallini/dealii,lue/dealii,EGP-CIG-REU/dealii,flow123d/dealii,lpolster/dealii,YongYang86/dealii,ibkim11/dealii,JaeryunYim/dealii,natashasharma/dealii,EGP-CIG-REU/dealii,kalj/dealii,nicolacavallini/dealii,flow123d/dealii,jperryhouts/dealii,JaeryunYim/dealii,angelrca/dealii,andreamola/dealii,danshapero/dealii,ibkim11/dealii,pesser/dealii,adamkosik/dealii,pesser/dealii,adamkosik/dealii,maieneuro/dealii,jperryhouts/dealii,ibkim11/dealii,shakirbsm/dealii,gpitton/dealii,nicolacavallini/dealii,angelrca/dealii,angelrca/dealii,EGP-CIG-REU/dealii