Define architectural load bases for PIE binaries.
MFC r198203 (by marius):
Change load base for sparc to match default gcc memory layout model.
Approved by: re (kensmith)
to the full path of the image that is being executed.
Increase AT_COUNT.
Remove no longer true comment about types used in Linux ELF binaries,
listed types contain FreeBSD-specific entries.
Reviewed by: kan
