Now we use p_filesz - 1 to test for NUL check that p_filesz is

Now we use p_filesz - 1 to test for NUL check that p_filesz is
at least two and while here allow the upper bound to be
MAXPATHLEN by changing a >= to > as suggested by krw@ in a thread
on tech where Maxime Villard proposed additional PT_INTERP checks.

tested by and ok guenther@