hg: jdk9/sandbox/jdk: Modify the template generating tool to not generate empty lines

[paul.sandoz at oracle.com]

Changeset: 08559d472428
Author:    psandoz
Date:      2015-09-10 17:02 +0200
URL:       http://hg.openjdk.java.net/jdk9/sandbox/jdk/rev/08559d472428

Modify the template generating tool to not generate empty lines
in the output for lines of text in the template that do not occur
in the output (currently this is specified as an option to the
tool just in case such lines are considered necessary for other
currently unknown use-cases)

! make/src/classes/build/tools/spp/Spp.java
! src/java.base/share/classes/java/lang/invoke/VarHandleBooleans.java
! src/java.base/share/classes/java/lang/invoke/VarHandleBytes.java
! src/java.base/share/classes/java/lang/invoke/VarHandleChars.java
! src/java.base/share/classes/java/lang/invoke/VarHandleDoubles.java
! src/java.base/share/classes/java/lang/invoke/VarHandleFloats.java
! src/java.base/share/classes/java/lang/invoke/VarHandleInts.java
! src/java.base/share/classes/java/lang/invoke/VarHandleLongs.java
! src/java.base/share/classes/java/lang/invoke/VarHandleObjects.java
! src/java.base/share/classes/java/lang/invoke/VarHandleShorts.java
! src/java.base/share/classes/java/lang/invoke/X-VarHandle.java.template
! src/java.base/share/classes/java/lang/invoke/generate-vhs.sh
! test/java/lang/invoke/generate-vh-tests.sh