K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2009-09-20T12:40:56.079415Z
K 7
svn:log
V 302
Old (a.out) rtld attempts to mmap zero-length region, e.g. when bss
of the linked object is zero-length. More old code assumes that mmap
of zero length returns success.

For a.out and pre-8 ELF binaries, allow the mmap of zero length.

Reported by:	tegge
Reviewed by:	tegge, alc, jhb
MFC after:	3 days

END