Linux shouldn't need the mkdetect scripts any longer. Get rid of bogus motif dependency as well.

config/config.mk

@@ -357,6 +357,7 @@ endif
 #
 # Need to define these before include the $ARCH.mk makefile
 #
+ifndef USE_AUTOCONF
 ifneq (,$(filter Linux,$(OS_ARCH)))
 MOZILLA_DETECT		= 1
 MOZILLA_DETECT_DIR	= $(DEPTH)/config/mkdetect
@@ -373,7 +374,6 @@ MOZILLA_DETECT_NAME	= detect_$(MOZILLA_DETECT_UNIQ_IDENT)_gen.mk
 MOZILLA_DETECT_GEN	= $(MOZILLA_DETECT_DIR)/$(MOZILLA_DETECT_NAME)
 endif
 
-ifndef USE_AUTOCONF
 #
 # Now include the platform-specific stuff.
 #

config/mkdetect/Makefile.in

@@ -40,11 +40,13 @@ DETECT_NAME	= detect_$(DETECT_UNIQ_IDENT)_gen.mk
 DETECT_GLIBC	= $(DETECT_DIR)/detect_glibc.sh -o $(DETECT_UNIQ_IDENT) \
 	-cc $(CC)
 
+ifeq (motif, $(MOZ_TOOLKIT))
 # The motif detection script
 DETECT_MOTIF	=\
 				$(DETECT_DIR)/detect_motif.sh -o $(DETECT_UNIQ_IDENT) \
 				-xif $(X11_INCLUDE_FLAGS) \
 	-cc $(CC)
+endif
 
 # The X11 detection script
 DETECT_X11	= $(DETECT_DIR)/detect_x11.sh -o $(DETECT_UNIQ_IDENT) \