thermosphere: add watchpoint + watchpoint merging code

thermosphere/Makefile

@@ -80,7 +80,7 @@ CXXFLAGS	:= $(CFLAGS) -fno-rtti -fno-exceptions -std=gnu++11
 ASFLAGS	:=	-g $(ARCH)
 LDFLAGS	=	-specs=$(TOPDIR)/linker.specs -nostartfiles -nostdlib -g $(ARCH) -Wl,-Map,$(notdir $*.map)
 
-LIBS	:=
+LIBS	:=	-lgcc
 
 #---------------------------------------------------------------------------------
 # list of directories containing libraries, this must be the top level containing