qemu-ga: clean up TOOLS variable

qemu-ga is included in the TOOLS variable without the .exe suffix, and this is
then worked around twice in the Makefile.  Do the right thing in configure
instead.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Makefile

@@ -681,7 +681,7 @@ clean: recurse-clean
 		! -path ./roms/edk2/BaseTools/Source/Python/UPT/Dll/sqlite3.dll \
 		-exec rm {} +
 	rm -f $(edk2-decompressed)
-	rm -f $(filter-out %.tlb,$(TOOLS)) $(HELPERS-y) qemu-ga$(EXESUF) TAGS cscope.* *.pod *~ */*~
+	rm -f $(filter-out %.tlb,$(TOOLS)) $(HELPERS-y) TAGS cscope.* *.pod *~ */*~
 	rm -f fsdev/*.pod scsi/*.pod
 	rm -f qemu-img-cmds.h
 	rm -f ui/shader/*-vert.h ui/shader/*-frag.h
@@ -845,7 +845,7 @@ install: all $(if $(BUILD_DOCS),install-doc) install-datadir install-localstated
 	$(if $(INSTALL_BLOBS),$(edk2-decompressed)) \
 	recurse-install
 ifneq ($(TOOLS),)
-	$(call install-prog,$(subst qemu-ga,qemu-ga$(EXESUF),$(TOOLS)),$(DESTDIR)$(bindir))
+	$(call install-prog,$(TOOLS),$(DESTDIR)$(bindir))
 endif
 ifneq ($(CONFIG_MODULES),)
 	$(INSTALL_DIR) "$(DESTDIR)$(qemu_moddir)"

configure

@@ -6129,7 +6129,7 @@ if [ "$guest_agent" != "no" ]; then
   if [ "$softmmu" = no -a "$want_tools" = no ] ; then
       guest_agent=no
   elif [ "$linux" = "yes" -o "$bsd" = "yes" -o "$solaris" = "yes" -o "$mingw32" = "yes" ] ; then
-      tools="qemu-ga $tools"
+      tools="qemu-ga\$(EXESUF) $tools"
       guest_agent=yes
   elif [ "$guest_agent" != yes ]; then
       guest_agent=no