increase version to 1.5
increase version to 1.5

Change-Id: Ia128e8b214835052507d79348714efc947f72f15
Reviewed-by: Karsten Heimrich <81d67632fe4bf9afb88a400b41aa25e19a1d2a12@digia.com>

olear/qtifw,olear/qtifw,olear/qtifw,olear/qtifw