Suggest to change this to opt-in without checking e_type per my investigation #16 (comment)

@Grimler91 what do you think?

I think it is good. In fact, e_type is not accurate for determining PIE. The correct way is to check DT_FLAGS_1.

@Grimler91, what do you think?

After reviewing again, I think this is unrelated to PIE.
It is more on to executable vs library and the recommendation to strip DT_PREINIT_ARRAY for executables.
Maybe can check using non-zero e_entry vs zero e_entry.

I added the following changes to make it opt-in.
syphyr@393f32a