NAME
Grid_conserveToPrimitive
SYNOPSIS
Grid_conserveToPrimitive(integer(in) :: blkList(count),
integer(in) :: count,
logical(in) :: allCells,
logical(in) :: force)
DESCRIPTION
Calls gr_conserveToPrimitive
ARGUMENTS
blkList - integer list of blocks to be operated on
count - number of blocks in the blkList
allCells - act on all cells, including guardcells, if .TRUE.,
otherwise only modify interior cells.
force - whether to force conversion