RFR: 8068498: Remove constructor dependency on line.separator from PrintWriter and BufferedWriter

[Claes Redestad]

Hi,

please review this change to remove the dependency on the line.separator
property at object construction time by instead using the 
System.lineSeparator()
utility.

In itself, this change will break some applications manipulating the 
line.separator
property to change the per-instance behavior, which is an unspecified 
implementation
behavior. This was partially discussed and suggested earlier on this 
list[1], and the
intent is to provide a well-specified method of overriding the line 
separator for a
PrintWriter and possibly BufferedWriter as a follow-on to this.

webrev: http://cr.openjdk.java.net/~redestad/8068498/webrev.01/
bug: https://bugs.openjdk.java.net/browse/JDK-8068498

Testing: JTREG java/lang java/io

/Claes

[1] 
http://mail.openjdk.java.net/pipermail/core-libs-dev/2015-January/030530.html