Rearrenged the directory tree

I just _had_ to get rid of that horrible libs/ directory. Now most of the
graphical stuff is in client/, but I'll create more subdirectories so that
they're not getting in the way.

common/makefile

@@ -0,0 +1,38 @@
+#config
+LOCALLIBS=
+LIB=
+INCLUDES=
+CXXFLAGS+=-std=c++11 -DDEBUG $(addprefix -I,$(INCLUDES))
+
+#source
+SRC=$(wildcard *.cpp)
+
+#objects
+OBJDIR=obj
+OBJ=$(addprefix $(OBJDIR)/,$(SRC:.cpp=.o))
+
+#output
+OUTDIR=../lib
+OUT=$(addprefix $(OUTDIR)/,libCommon.a)
+
+#targets
+all: $(OBJ) $(OUT)
+	ar -crs $(OUT) $(OBJ)
+
+$(OBJ): | $(OBJDIR)
+
+$(OUT): | $(OUTDIR)
+
+$(OBJDIR):
+	mkdir $(OBJDIR)
+
+$(OUTDIR):
+	mkdir $(OUTDIR)
+
+$(OBJDIR)/%.o: %.cpp
+	$(CXX) $(CXXFLAGS) -c -o $@ $<
+
+clean:
+	$(RM) *.o *.a *.exe
+
+rebuild: clean all