Restructured the common/ directory, and simplified the build process

common/makefile

@@ -1,30 +1,29 @@
 #config
-INCLUDES+=.
+INCLUDES+=. ..
 LIBS+=
 CXXFLAGS+=-std=c++11 -DDEBUG $(addprefix -I,$(INCLUDES))
-CFLAGS+=-DDEBUG $(addprefix -I,$(INCLUDES))
 
 #source
 CXXSRC=$(wildcard *.cpp)
-CSRC=$(wildcard *.c)
 
 #objects
 OBJDIR=obj
 OBJ+=$(addprefix $(OBJDIR)/,$(CXXSRC:.cpp=.o))
-OBJ+=$(addprefix $(OBJDIR)/,$(CSRC:.c=.o))
 
 #output
-OUTDIR=..
+OUTDIR=../..
 OUT=$(addprefix $(OUTDIR)/,libcommon.a)
 
 #targets
 all: $(OBJ) $(OUT)
 	ar -crs $(OUT) $(OBJ)
+	$(MAKE) -C gameplay
 	$(MAKE) -C graphics
 	$(MAKE) -C map
-	$(MAKE) -C script
 	$(MAKE) -C network
+	$(MAKE) -C script
 	$(MAKE) -C ui
+	$(MAKE) -C utilities
 
 $(OBJ): | $(OBJDIR)
 
@@ -39,9 +38,6 @@ $(OUTDIR):
 $(OBJDIR)/%.o: %.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 
-$(OBJDIR)/%.o: %.c
-	$(CC) $(CFLAGS) -c -o $@ $<
-
 clean:
 	$(RM) *.o *.a *.exe