Allow the Echo and EchoCmd variables to be overridden.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19551 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Makefile.rules b/Makefile.rules
index 7badbdd..b1363d0 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -228,8 +228,8 @@
 #--------------------------------------------------------------------
 # Full Paths To Compiled Tools and Utilities
 #--------------------------------------------------------------------
-EchoCmd  := $(ECHO) llvm[$(MAKELEVEL)]:
-Echo     := @$(EchoCmd)
+EchoCmd  = $(ECHO) llvm[$(MAKELEVEL)]:
+Echo     = @$(EchoCmd)
 ifndef LIBTOOL
 LIBTOOL  := $(LLVM_OBJ_ROOT)/mklib
 endif