Fixed lintian warning 'symlink-should-be-relative' for the symlinks between /usr/bin/.. and /usr/share/<app>/bin/.. files

Author: aparkinson

src/main/scala/com/typesafe/sbt/packager/GenericPackageSettings.scala

@@ -88,7 +88,7 @@ trait GenericPackageSettings
           if !file.isDirectory
           if name startsWith "bin/"
           if !(name endsWith ".bat")  // IGNORE windows-y things.
-        } yield LinuxSymlink("/usr/" + name, installLocation+"/"+pkg+"/"+name)
+        } yield LinuxSymlink("/usr/" + name, installLocation.stripPrefix("/usr/")+"/"+pkg+"/"+name)
     },
     // Map configuration files
     linuxPackageSymlinks <++= (normalizedName in Universal, mappings in Universal, defaultLinuxInstallLocation) map { (pkg, mappings, installLocation) =>