When user enters path with symbolic link on UNIX anywhere in installer GUI
symbolic links are resolved (File.getAbsolutePath()). Solution is not to use
getAbsolutePath or getCanonicalPath. Instead we could try java.net.URI.normalize
to resolve relative path and remove ../ segments from path.
Eg. /home/user/../user should be resolved to /home/user, ../../user should be
resolved to /home/user.
Assigned to new owner.
The useful solution could be done using java.nio.file.Path - normalize()
First attempt in http://hg.netbeans.org/core-main/rev/232dcb37e51a
Fixed in changeset: http://hg.netbeans.org/core-main/rev/8354c1b7bfc9