build: ldconfig lives in /sbin
I used to have /sbin in my regular path - that's why it worked before,
but without it fails:
g++ -g -O2 -fPIC -Wall -D_GNU_SOURCE=1 -D_REENTRANT -I/usr/include/SDL -shared -Wl,-no-undefined -Wl,-soname=librawv.so.0 view.o capture.o net.o misc.o sdlu.o -lSDL -o librawv.so.0.0
ldconfig -l librawv.so.0.0
make: ldconfig: Command not found
Makefile:15: recipe for target `librawv.so' failed
make: *** [librawv.so] Error 127
So just use the full path to ldconfig.
Signed-off-by: Kirill Smelkov <kirr@navytux.spb.ru>