Changes in version 1.10:

Compression level '-0' now uses a dictionary size of 64 KiB instead of
1 MiB.

Errors are now also checked when closing the input file.

Pdlzip now compiles on DOS with DJGPP. (Patch from Robert Riebisch).

The configure script now accepts appending options to CFLAGS using the
syntax 'CFLAGS+=OPTIONS'.

It has been documented in INSTALL the use of
CFLAGS+='-D __USE_MINGW_ANSI_STDIO' when compiling on MinGW.
