it wasn't found. i did patch it but now have the 
following:

htslib.c: In function `mtime_local':
htslib.c:1817: `B' undeclared (first use in this 
function)
htslib.c:1817: (Each undeclared identifier is reported 
only once
htslib.c:1817: for each function it appears in.)
htslib.c:1819: warning: control reaches end of non-
void function
*** Error code 1

Stop in /home/qm/httrack-3.00-rc8/src.
*** Error code 1

Stop in /home/qm/httrack-3.00-rc8/src.

:(