- merge branch 'lfs'

Conflicts:
	src/config.h.in
- add OFF_T_FORMAT in buffer.c log message

Conflicts:
	src/buffer.c
- cast result of some math to (int) to avoid having to use OFF_T_FORMAT macro
- substantially revise large file support
- tested on 64bit openSUSE using LDFLAGS=-m32 CFLAGS=-m32 ./configure