LibDraw: Introduce (formerly known as SharedGraphics.)

Instead of LibGUI and WindowServer building their own copies of the drawing
and graphics code, let's it in a separate LibDraw library.

This avoids building the code twice, and will encourage better separation
of concerns. :^)

Libraries/LibDraw/Makefile

@@ -0,0 +1,35 @@
+include ../../Makefile.common
+
+OBJS = \
+    CharacterBitmap.o \
+    Color.o \
+    DisjointRectSet.o \
+    Font.o \
+    GraphicsBitmap.o \
+    Painter.o \
+    PNGLoader.o \
+    Rect.o \
+    StylePainter.o
+
+LIBRARY = libdraw.a
+DEFINES += -DUSERLAND
+
+all: $(LIBRARY)
+
+$(LIBRARY): $(OBJS)
+	@echo "LIB $@"; $(AR) rcs $@ $(OBJS) $(LIBS)
+
+.cpp.o:
+	@echo "CXX $<"; $(CXX) $(CXXFLAGS) -o $@ -c $<
+
+-include $(OBJS:%.o=%.d)
+
+clean:
+	@echo "CLEAN"; rm -f $(LIBRARY) $(OBJS) *.d
+
+install: $(LIBRARY)
+	mkdir -p ../../Root/usr/include/LibGfx
+	# Copy headers
+	rsync -r -a --include '*/' --include '*.h' --exclude '*' . ../../Root/usr/include/LibGfx
+	# Install the library
+	cp $(LIBRARY) ../../Root/usr/lib