add USE_PACKAGES cg where appropriate

pandatool/src/bam/Sources.pp

@@ -1,4 +1,4 @@
-#define USE_PACKAGES fftw
+#define USE_PACKAGES fftw cg
 #define OTHER_LIBS \
   egg2pg:c egg:c pandaegg:m \
   pipeline:c recorder:c parametrics:c collide:c chan:c char:c \

pandatool/src/egg-palettize/Sources.pp

@@ -1,3 +1,5 @@
+#define USE_PACKAGES cg  // from gobj.
+
 #define OTHER_LIBS \
   egg:c pandaegg:m \
   pgraph:c gobj:c lerp:c linmath:c putil:c \

pandatool/src/egg-qtess/Sources.pp

@@ -1,3 +1,5 @@
+#define USE_PACKAGES cg  // from gobj.
+
 #begin bin_target
   #define TARGET egg-qtess
   #define LOCAL_LIBS \

pandatool/src/ptloader/Sources.pp

@@ -1,3 +1,5 @@
+#define USE_PACKAGES cg  // from gobj.
+
 #begin lib_target
   #define TARGET ptloader
   #define BUILDING_DLL BUILDING_PTLOADER