Removed casts of unsigned ints to ints from _nrrdGzRead/Write, as well as unnecessary casts to unsigned int from len.
Removed casts of unsigned ints to ints from _nrrdGzRead/Write, as well as unnecessary casts to unsigned int from len.


git-svn-id: 9e9401559e51101c165cdce4d49b411eb20436ed@902 3d70eeeb-363e-0410-a505-8a46323a89f2

Slicer/teem,BRAINSia/teem,Slicer/teem,BRAINSia/teem,BRAINSia/teem,Slicer/teem,BRAINSia/teem,Slicer/teem,Slicer/teem,BRAINSia/teem