README.gcov:

Revise README.gcov.


mysql-test/README.gcov:
  Revise README.gcov.

mysql-test/README.gcov

@@ -1,11 +1,13 @@
 To be able to see the level of coverage with the current test suite,
 do the following:
 
-  - make sure gcov is installed
-  - compile with BUILD/compile-pentium-gcov ( if your machine is not pentium, hack
-this script, or just live with the pentium-specific stuff)
-  - ./mysql-test-run -gcov
-  - to see the level of coverage for a given source file:
+  - Make sure gcov is installed
+  - Compile the MySQL distribution with BUILD/compile-pentium-gcov (if your
+    machine does not have a pentium CPU, hack this script, or just live with
+	the pentium-specific stuff)
+  - In the mysql-test directory, run this command: ./mysql-test-run -gcov
+  - To see the level of coverage for a given source file:
      grep source_file_name /tmp/gcov.out
-  - to see which lines are not yet covered, look at source_file_name.gcov in the source tree. Then think hard about a test case that will cover those
-lines, and write one!
+  - To see which lines are not yet covered, look at source_file_name.gcov in
+    the source tree. Then think hard about a test case that will cover those
+    lines, and write one!