1) Replaced all Makefile* with GNUmakefile*.

2) Changed Makedepend system to make individual dependency files, which
   should save time rebuilding dependencies by limiting the regeneration
   of dependency file for only modified source files.

examples/osghud/Makefile

@@ -1,19 +0,0 @@
-TOPDIR = ../..
-include $(TOPDIR)/Make/makedefs 
-
-CXXFILES =\
-	osghud.cpp\
-
-LIBS     += -losgProducer -lProducer -losgText $(OSG_LIBS) $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS) 
-
-INSTFILES = \
-	$(CXXFILES)\
-	Makefile.inst=Makefile
-
-EXEC = osghud
-
-CXXFLAGS += $(PRODUCER_INCLUDE_DIR)
-LDFLAGS  += $(PRODUCER_LIB_DIR)
-
-include $(TOPDIR)/Make/makerules 
-