Fixed main dependency

`programs` has depended on the "fake" script, which is used by
`test-spec` and etc.

common.mk

@@ -207,7 +207,7 @@ MAKE_LINK = $(MINIRUBY) -rfileutils -e "include FileUtils::Verbose" \
 
 all: $(SHOWFLAGS) main docs
 
-main: $(SHOWFLAGS) exts $(ENCSTATIC:static=lib)encs
+main: $(SHOWFLAGS) exts $(ENCSTATIC:static=lib)encs programs
 	@$(NULLCMD)
 
 mjit-headers: $(MJIT_SUPPORT)-mjit-headers