[make] run jbuilder when files in infer/src/ change

Summary:
Without it `make` will not rebuild infer when "infer/src/infer.ml" changes
(since D7381842 moved it out of backend/).

Reviewed By: mbouaziz

Differential Revision: D7443275

fbshipit-source-id: 33ea10b

infer/src/Makefile

@@ -87,7 +87,7 @@ OCAML_GENERATED_SOURCES += $(CLANG_ATDGEN_STUBS) $(CLANG_PLUGIN_MIRRORED_FILES)
 endif
 
 OCAML_SOURCES = \
-  $(wildcard */[a-zA-Z]*.ml */[a-zA-Z]*.ml[ily]) \
+  $(wildcard */[a-zA-Z]*.ml */[a-zA-Z]*.ml[ily] *.ml *.ml[ily]) \
   $(OCAML_GENERATED_SOURCES)
 
 .PHONY: all