rename encodingNameByteArray() to encoding()
rename encodingNameByteArray() to encoding()

make the old encodingName function return something usable
fix some documentation typos
add @since to encoding()

svn path=/trunk/KDE/kdelibs/kate/; revision=944617

cmacq2/kate,hlamer/kate,DickJ/kate,hlamer/kate,hlamer/kate,sandsmark/kate,DickJ/kate,DickJ/kate,DickJ/kate,cmacq2/kate,hlamer/kate,sandsmark/kate,hlamer/kate,sandsmark/kate,hlamer/kate,jfmcarreira/kate,sandsmark/kate,hlamer/kate,jfmcarreira/kate,hlamer/kate,cmacq2/kate,hlamer/kate,hlamer/kate,jfmcarreira/kate