Fix CFG_RUN_TARG on windows

Author: brson

mk/platform.mk

@@ -139,7 +139,7 @@ ifdef CFG_WINDOWSY
   CFG_LDPATH :=$(CFG_LLVM_BINDIR)
   CFG_LDPATH :=$(CFG_LDPATH):$$PATH
   CFG_RUN=PATH="$(CFG_LDPATH):$(1)" $(2)
-  CFG_RUN_TARG=$(call CFG_RUN,,$(2))
+  CFG_RUN_TARG=$(call CFG_RUN,$(1)/lib,$(2))
   CFG_RUN_TEST=$(call CFG_RUN,$(call CFG_TESTLIB,$(1)),$(1))
   CFG_LIBUV_LINK_FLAGS=-lWs2_32