Povoleny warningy (patch by MJ).

aim-kit/Makefile

 # Compilation settings:
-CFLAGS=-Wall -std=gnu99 -I/usr/include/netpbm $(MYCFLAGS)
+CFLAGS=-Wall -Wextra -std=gnu99 -I/usr/include/netpbm $(MYCFLAGS)
 LDFLAGS=-lm -lnetpbm $(MYLDFLAGS)
 
 OPTCFLAGS=$(CFLAGS) -O3 -march=native -DNDEBUG