8048840: File.createTempFile has uninformative failure message
Reviewed-by: martin, alanb

8027155: test/java/io/File/NulFile.java failing when test run in othervm mode
Reviewed-by: mchung, alanb

8017212: File.createTempFile requires unnecessary "read" permission
Summary: Directly call FileSystem method to check a file existence. Also reviewed by tom.hawtin@oracle.com
Reviewed-by: alanb

8013827: File.createTempFile hangs with temp file starting with 'com1.4'
8011950: java.io.File.createTempFile enters infinite loop when passed invalid data
Reviewed-by: alanb

8003992: File and other classes in java.io do not handle embedded nulls properly
Summary: Have every file operation done with File, FileInputStream, FileOutputStream, or RandomAccessFile that involves a file path containing NUL fail. Also reviewed by fweimer@redhat.com
Reviewed-by: alanb, sherman, ahgross, mduigou, dholmes, aph, plevart, martin