Having p_align > page_size leads to the situation when striping
packed executables results in unnecessary p_vaddr adjustments.
And it also may result (with probability 1 - 1/sizeof(uintptr_t)) in
misaligned segments following .dynstr
Bug: http://b/20629834
Bug: http://b/18051137
(cherry picked from commit b293969c6d4acede62ac7b035dcb598e63574ca0)
Change-Id: I2fb15cf5cb52fada6511d5af93df099fc2cbf7ba
7936fa6536