RFR: JDK-8007897 Problems cleaning up a file named jdk/gensrc/java/nio/_the.. on Windows

Thu Feb 20 13:22:29 UTC 2014

During build, we create a touch file which is literally named '_the..'. 
While cygwin handles this without issues, Windows believes this to be a 
file with the extension "." and can't touch it, that is, not delete or 
move it.

This patch renames this file (and others created at the same time) to 
have a proper extension (".marker"), which Windows deals with properly.

Bug: https://bugs.openjdk.java.net/browse/JDK-8007897
WebRev: 
http://cr.openjdk.java.net/~ihse/JDK-8007897-make-file-has-illegal-name-in-window/webrev.01

/Magnus