Changes in dense_matrix.C for -Wshadow.
Changes in dense_matrix.C for -Wshadow.

Issue #24.

friedmud/libmesh,libMesh/libmesh,coreymbryant/libmesh,balborian/libmesh,dschwen/libmesh,90jrong/libmesh,friedmud/libmesh,libMesh/libmesh,dknez/libmesh,roystgnr/libmesh,giorgiobornia/libmesh,pbauman/libmesh,roystgnr/libmesh,dmcdougall/libmesh,Mbewu/libmesh,pbauman/libmesh,jwpeterson/libmesh,jiangwen84/libmesh,benkirk/libmesh,dschwen/libmesh,markcmiller86/libmesh_silo,dknez/libmesh,friedmud/libmesh,permcody/libmesh,coreymbryant/libmesh,hrittich/libmesh,svallaghe/libmesh,pbauman/libmesh,aeslaughter/libmesh,friedmud/libmesh,salazardetroya/libmesh,capitalaslash/libmesh,aeslaughter/libmesh,cahaynes/libmesh,svallaghe/libmesh,jiangwen84/libmesh,roystgnr/libmesh,svallaghe/libmesh,balborian/libmesh,BalticPinguin/libmesh,permcody/libmesh,giorgiobornia/libmesh,benkirk/libmesh,90jrong/libmesh,salazardetroya/libmesh,vikramvgarg/libmesh,90jrong/libmesh,coreymbryant/libmesh,giorgiobornia/libmesh,Mbewu/libmesh,pbauman/libmesh,capitalaslash/libmesh,permcody/libmesh,BalticPinguin/libmesh,dschwen/libmesh,jiangwen84/libmesh,90jrong/libmesh,jwpeterson/libmesh,dmcdougall/libmesh,hrittich/libmesh,Mbewu/libmesh,benkirk/libmesh,markcmiller86/libmesh_silo,svallaghe/libmesh,karpeev/libmesh,vikramvgarg/libmesh,jiangwen84/libmesh,salazardetroya/libmesh,cahaynes/libmesh,aeslaughter/libmesh,roystgnr/libmesh,roystgnr/libmesh,BalticPinguin/libmesh,pbauman/libmesh,capitalaslash/libmesh,aeslaughter/libmesh,balborian/libmesh,capitalaslash/libmesh,benkirk/libmesh,jiangwen84/libmesh,permcody/libmesh,markcmiller86/libmesh_silo,benkirk/libmesh,Mbewu/libmesh,svallaghe/libmesh,cahaynes/libmesh,coreymbryant/libmesh,balborian/libmesh,Mbewu/libmesh,markcmiller86/libmesh_silo,BalticPinguin/libmesh,BalticPinguin/libmesh,benkirk/libmesh,pbauman/libmesh,capitalaslash/libmesh,markcmiller86/libmesh_silo,salazardetroya/libmesh,jwpeterson/libmesh,balborian/libmesh,coreymbryant/libmesh,aeslaughter/libmesh,dknez/libmesh,hrittich/libmesh,markcmiller86/libmesh_silo,karpeev/libmesh,permcody/libmesh,roystgnr/libmesh,dschwen/libmesh,salazardetroya/libmesh,libMesh/libmesh,BalticPinguin/libmesh,salazardetroya/libmesh,permcody/libmesh,cahaynes/libmesh,Mbewu/libmesh,permcody/libmesh,90jrong/libmesh,capitalaslash/libmesh,markcmiller86/libmesh_silo,dmcdougall/libmesh,giorgiobornia/libmesh,aeslaughter/libmesh,friedmud/libmesh,aeslaughter/libmesh,balborian/libmesh,jiangwen84/libmesh,pbauman/libmesh,dmcdougall/libmesh,vikramvgarg/libmesh,90jrong/libmesh,karpeev/libmesh,libMesh/libmesh,salazardetroya/libmesh,friedmud/libmesh,svallaghe/libmesh,balborian/libmesh,benkirk/libmesh,libMesh/libmesh,aeslaughter/libmesh,Mbewu/libmesh,libMesh/libmesh,benkirk/libmesh,jwpeterson/libmesh,cahaynes/libmesh,karpeev/libmesh,vikramvgarg/libmesh,friedmud/libmesh,coreymbryant/libmesh,giorgiobornia/libmesh,Mbewu/libmesh,dschwen/libmesh,dmcdougall/libmesh,dknez/libmesh,roystgnr/libmesh,vikramvgarg/libmesh,dknez/libmesh,dknez/libmesh,capitalaslash/libmesh,cahaynes/libmesh,dknez/libmesh,karpeev/libmesh,dmcdougall/libmesh,salazardetroya/libmesh,vikramvgarg/libmesh,dmcdougall/libmesh,BalticPinguin/libmesh,friedmud/libmesh,svallaghe/libmesh,coreymbryant/libmesh,libMesh/libmesh,karpeev/libmesh,balborian/libmesh,jiangwen84/libmesh,jiangwen84/libmesh,90jrong/libmesh,karpeev/libmesh,giorgiobornia/libmesh,dknez/libmesh,jwpeterson/libmesh,pbauman/libmesh,svallaghe/libmesh,hrittich/libmesh,balborian/libmesh,hrittich/libmesh,cahaynes/libmesh,cahaynes/libmesh,dschwen/libmesh,markcmiller86/libmesh_silo,benkirk/libmesh,aeslaughter/libmesh,giorgiobornia/libmesh,karpeev/libmesh,90jrong/libmesh,jwpeterson/libmesh,giorgiobornia/libmesh,vikramvgarg/libmesh,coreymbryant/libmesh,roystgnr/libmesh,dschwen/libmesh,jwpeterson/libmesh,svallaghe/libmesh,giorgiobornia/libmesh,dschwen/libmesh,vikramvgarg/libmesh,dmcdougall/libmesh,BalticPinguin/libmesh,hrittich/libmesh,capitalaslash/libmesh,hrittich/libmesh,libMesh/libmesh,friedmud/libmesh,pbauman/libmesh,hrittich/libmesh,90jrong/libmesh,hrittich/libmesh,Mbewu/libmesh,permcody/libmesh,balborian/libmesh,jwpeterson/libmesh,vikramvgarg/libmesh