Fix a bug in lha read format.
The bug was it could not correctly extract the compressed data
which had just one repated pattern.
Fix a bug which uudecode filter wrongly decoded the uuencoded data
which size was more than 64K bytes.

Conflicts:
	Makefile.am
mtree: fix line filename length calculation.
Fixes #301.
Signed-off-by: Andres Mejia <amejia004@gmail.com>