[igraph] igraph python interface errors

[Chris Wj]

>From latest bzr (1509):

gcc -pthread -fno-strict-aliasing -DNDEBUG -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i386 -mtune=generic -fasynchronous-unwind-tables -D_GNU_SOURCE -fPIC -fPIC -I/usr/include -I/usr/local/include -I/usr/local/include -I/usr/include -I../../include -I/usr/include/python2.5 -c src/graphobject.c -o build/temp.linux-i686-2.5/src/graphobject.o
src/graphobject.c: In function ‘igraphmodule_Graph_biconnected_components’:
src/graphobject.c:2981: warning: passing argument 4 of ‘igraph_biconnected_components’ from incompatible pointer type
src/graphobject.c:2981: error: too few arguments to function ‘igraph_biconnected_components’
error: command 'gcc' failed with exit status 1

-Chris