Add the alignment offset to the glyph lines.

Add the alignment offset to the glyph lines.

When the lines are horizontally aligned, we don't
want to modify the original layout. Subsequent calls
to Layout::Align() will always use the original layout
and modify only the alignment offset of each line.
The TextView is the responsible of adding the offset
to get the final layout.

Change-Id: Id8c1fea9a75e77b597b6744f226ef566408e6e8c
Signed-off-by: Victor Cebollada <v.cebollada@samsung.com>