8177855: Clean up legal files

Reviewed-by: alanb, darcy

jdk/src/java.desktop/share/legal/jpeg.md

@@ -1,4 +1,4 @@
-## JPEG release 6b
+## Independent JPEG Group: JPEG release 6b
 
 ### JPEG License
 <pre>

jdk/src/jdk.crypto.ec/share/legal/ecc.md

@@ -6,7 +6,8 @@
 This notice is provided with respect to Elliptic Curve Cryptography,
 which is included with JRE, JDK, and OpenJDK.
 
-You are receiving a copy of the Elliptic Curve Cryptography library in source
+You are receiving a [copy](http://hg.openjdk.java.net/jdk9/jdk9/jdk/file/tip/src/jdk.crypto.ec/share/native/libsunec/impl)
+of the Elliptic Curve Cryptography library in source
 form with the JDK and OpenJDK source distributions, and as object code in
 the JRE & JDK runtimes.