[13u] RFR: 8237192: Generate stripped/public pdbs on Windows for jdk images

[Ekaterina Vergizova]

Hello,
I would like to backport the fix for 8237192 to 13u. It is already included into 11u.

JBS: https://bugs.openjdk.java.net/browse/JDK-8237192
Original patch: https://hg.openjdk.java.net/jdk/jdk/rev/9b999cf5e13a
Webrev for 13u: http://cr.openjdk.java.net/~yan/8237192/webrev.00/

The patch applies cleanly except for: 
- some copyright years are changed 
- in make/common/NativeCompilation.gmk the variable $1_SYMBOLS_DIR of the original patch
  is replaced by it's equivalent $1_OUTPUT_DIR (8212780 is not in 13u)
- in make/scripts/compare.sh a small modification is done due to different context (8233112 is not in 13u) 

Testing: 
Windows images with different values of new option '--with-external-symbols-in-bundles' are built successfully,
the default configuration is tested with tier1.

Thanks,
Ekaterina