Fix several reads beyond the mapped first page of the binary in the

Fix several reads beyond the mapped first page of the binary in the
ELF parser. Specifically, do not allow note reader and interpreter
path comparision in the brandelf code to read past end of the page.
This may happen if specially crafter ELF image is activated.

Submitted by:	Lukasz Wojcik <lukasz.wojcik zoho com>
MFC after:	3 days