Add helpful comments in ESAPI release preparation.

Author: kwwall

scripts/README.txt

@@ -1,5 +1,8 @@
 This directory is for utilities used for building / packaging / releasing ESAPI.
 
+The scripts and configuration files in this directory are mostly used to create ESAPI release notes.
+(The 2 'mvnQuietTest' scripts are the major exceptions to that.)
+
 ========================
 
 README.txt          -- This readme file.

scripts/esapi4java-core-TEMPLATE-release-notes.txt

@@ -48,6 +48,8 @@ ESAPI ${PREV_VERSION} release:
 
 ESAPI ${VERSION} release:
 @@@@ Count them and run 'mvn test' to get the # of tests.
+@@@@ Count Java source files by executing:
+@@@@        find src/main -type f -name '*.java' | wc -l
     #### Java source files
     #### JUnit tests in #### Java source files