./configure and large file support

[Jeffrey M.Vinocur]

I just tried to build INN from CVS for the first time in a while (this 
is linux 2.4 / gentoo).  I was building with `make warnings` and got:

gcc -g -O -DDEBUG=1 -Wall -W -Wendif-labels -Wpointer-arith 
-Wbad-function-cast -Wcast-align -Wwrite-strings -Wstrict-prototypes 
-Wmissing-prototypes -Wnested-externs -Werror -g -O2 -I../include  -c 
dbz.cdbz.c: In function `putconf':dbz.c:1211: warning: implicit 
declaration of function `fseeko'

Carefully diagnosis with the help of Nathan here reveals that 
./configure looks for fseeko and ftello in all cases, but glibc stdio.h 
only provides prototypes for those functions when USE_LARGEFILE is 
defined.

Russ, I haven't a clue how best to fix this.


-- 
Jeffrey M. Vinocur
jeff at litech.org