JFB build on Linux platform failed.
...
...
+ cd jrefb1.7.0
/tmp/jprt/P1/B/170847.asaha/source/build/linux-i586/tmp/jre-rpm/tmp/rpm-tmp.34274:
  line 31: cd: jrefb1.7.0: No such file or directory
error: Bad exit status from
  /tmp/jprt/P1/B/170847.asaha/source/build/linux-i586/tmp/jre-rpm/tmp/rpm-tmp.34274
  (%prep)
Bad exit status from
  /tmp/jprt/P1/B/170847.asaha/source/build/linux-i586/tmp/jre-rpm/tmp/rpm-tmp.34274