Refactor SHA*_file functions into a separate file. Generate them using a C macro.

src/platform/vboot_reference/tests/Makefile

Index: src/platform/vboot_reference/tests/Makefile
diff --git a/src/platform/vboot_reference/tests/Makefile b/src/platform/vboot_reference/tests/Makefile
index e3694cf56defc904fd0e38aaae98d2f0e1b3cf77..31906c4fb4f6c8c1117cc06fdcc0d3aa82b6378e 100644
--- a/src/platform/vboot_reference/tests/Makefile
+++ b/src/platform/vboot_reference/tests/Makefile
@@ -2,17 +2,19 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-SRCS=sha_tests.c verify_data.c
+SRCS=sha_tests.c verify_data.c digest_utility.c
 OBJS=$(SRCS:.c=.o)
 LIBS=$(TOP)/crypto/libcrypto.a $(TOP)/common/libcommon.a
 
 tests:	sha_tests verify_data
 
 sha_tests:	sha_tests.c
-	$(CC) $(CFLAGS) $(INCLUDES) $< -o $@ $(LIBS)
+	$(CC) $(CFLAGS) -DNDEBUG $(INCLUDES) $< -o $@ $(LIBS)
 
-verify_data:	verify_data.c
-	$(CC) $(CFLAGS) $(INCLUDES) $< -o $@ $(LIBS)
+verify_data:	verify_data.c digest_utility.o
+	$(CC) $(CFLAGS) -DNDEBUG $(INCLUDES) $< -o $@ digest_utility.o $(LIBS)
 
+digest_utility.o:	digest_utility.c
+	$(CC) $(CFLAGS) $(INCLUDES) -c $< -o $@ 
 clean:
 	rm -f $(OBJS) sha_tests verify_data