partial warnings fixes
partial warnings fixes

This gets the worst of the Wconversion problems, but the variational
smoother code is still almost certainly not 64-bit ready.

I'm leaving the defaultless-switch and Wshadow problems untouched for
now; this code is still too opaque to me.

aeslaughter/libmesh,roystgnr/libmesh,svallaghe/libmesh,aeslaughter/libmesh,libMesh/libmesh,90jrong/libmesh,svallaghe/libmesh,vikramvgarg/libmesh,aeslaughter/libmesh,vikramvgarg/libmesh,hrittich/libmesh,Mbewu/libmesh,friedmud/libmesh,90jrong/libmesh,salazardetroya/libmesh,libMesh/libmesh,jwpeterson/libmesh,libMesh/libmesh,salazardetroya/libmesh,capitalaslash/libmesh,BalticPinguin/libmesh,dschwen/libmesh,pbauman/libmesh,dknez/libmesh,dschwen/libmesh,dknez/libmesh,benkirk/libmesh,BalticPinguin/libmesh,jwpeterson/libmesh,dschwen/libmesh,benkirk/libmesh,vikramvgarg/libmesh,svallaghe/libmesh,friedmud/libmesh,90jrong/libmesh,cahaynes/libmesh,dknez/libmesh,friedmud/libmesh,BalticPinguin/libmesh,coreymbryant/libmesh,balborian/libmesh,BalticPinguin/libmesh,pbauman/libmesh,giorgiobornia/libmesh,Mbewu/libmesh,benkirk/libmesh,coreymbryant/libmesh,hrittich/libmesh,roystgnr/libmesh,karpeev/libmesh,dschwen/libmesh,roystgnr/libmesh,svallaghe/libmesh,friedmud/libmesh,salazardetroya/libmesh,pbauman/libmesh,roystgnr/libmesh,giorgiobornia/libmesh,capitalaslash/libmesh,pbauman/libmesh,pbauman/libmesh,coreymbryant/libmesh,capitalaslash/libmesh,jwpeterson/libmesh,coreymbryant/libmesh,benkirk/libmesh,dknez/libmesh,permcody/libmesh,BalticPinguin/libmesh,dschwen/libmesh,permcody/libmesh,dmcdougall/libmesh,aeslaughter/libmesh,Mbewu/libmesh,jiangwen84/libmesh,dknez/libmesh,karpeev/libmesh,Mbewu/libmesh,dknez/libmesh,benkirk/libmesh,Mbewu/libmesh,90jrong/libmesh,svallaghe/libmesh,permcody/libmesh,90jrong/libmesh,90jrong/libmesh,cahaynes/libmesh,pbauman/libmesh,coreymbryant/libmesh,svallaghe/libmesh,karpeev/libmesh,vikramvgarg/libmesh,permcody/libmesh,benkirk/libmesh,giorgiobornia/libmesh,Mbewu/libmesh,coreymbryant/libmesh,hrittich/libmesh,svallaghe/libmesh,aeslaughter/libmesh,benkirk/libmesh,dknez/libmesh,salazardetroya/libmesh,hrittich/libmesh,dmcdougall/libmesh,jiangwen84/libmesh,balborian/libmesh,karpeev/libmesh,jiangwen84/libmesh,capitalaslash/libmesh,permcody/libmesh,pbauman/libmesh,libMesh/libmesh,BalticPinguin/libmesh,cahaynes/libmesh,giorgiobornia/libmesh,capitalaslash/libmesh,friedmud/libmesh,roystgnr/libmesh,aeslaughter/libmesh,jiangwen84/libmesh,90jrong/libmesh,balborian/libmesh,dmcdougall/libmesh,jiangwen84/libmesh,vikramvgarg/libmesh,capitalaslash/libmesh,balborian/libmesh,Mbewu/libmesh,90jrong/libmesh,pbauman/libmesh,jiangwen84/libmesh,friedmud/libmesh,dmcdougall/libmesh,cahaynes/libmesh,salazardetroya/libmesh,permcody/libmesh,giorgiobornia/libmesh,permcody/libmesh,dschwen/libmesh,friedmud/libmesh,karpeev/libmesh,hrittich/libmesh,aeslaughter/libmesh,dmcdougall/libmesh,friedmud/libmesh,karpeev/libmesh,balborian/libmesh,dschwen/libmesh,benkirk/libmesh,dmcdougall/libmesh,hrittich/libmesh,Mbewu/libmesh,balborian/libmesh,giorgiobornia/libmesh,jwpeterson/libmesh,roystgnr/libmesh,jiangwen84/libmesh,hrittich/libmesh,salazardetroya/libmesh,benkirk/libmesh,salazardetroya/libmesh,vikramvgarg/libmesh,libMesh/libmesh,BalticPinguin/libmesh,svallaghe/libmesh,aeslaughter/libmesh,cahaynes/libmesh,jwpeterson/libmesh,vikramvgarg/libmesh,jwpeterson/libmesh,dschwen/libmesh,friedmud/libmesh,balborian/libmesh,balborian/libmesh,balborian/libmesh,vikramvgarg/libmesh,hrittich/libmesh,roystgnr/libmesh,jwpeterson/libmesh,BalticPinguin/libmesh,90jrong/libmesh,coreymbryant/libmesh,roystgnr/libmesh,balborian/libmesh,capitalaslash/libmesh,giorgiobornia/libmesh,pbauman/libmesh,dknez/libmesh,Mbewu/libmesh,jwpeterson/libmesh,dmcdougall/libmesh,coreymbryant/libmesh,giorgiobornia/libmesh,permcody/libmesh,libMesh/libmesh,svallaghe/libmesh,hrittich/libmesh,giorgiobornia/libmesh,salazardetroya/libmesh,karpeev/libmesh,cahaynes/libmesh,cahaynes/libmesh,karpeev/libmesh,cahaynes/libmesh,libMesh/libmesh,jiangwen84/libmesh,capitalaslash/libmesh,dmcdougall/libmesh,aeslaughter/libmesh,libMesh/libmesh,vikramvgarg/libmesh