[PATCH 0 of 1] Fix make clean on icedtea6

[Mark Wielaard]

Hi,

As Pavel noticed on irc make clean would fail on icedtea6 after make check
was run. This is because make clean depends on clean-jtreg which tries
to remove the (it thinks) empty build test directory. For it to be really
empty clean-jtreg needs to depend on clean-jtreg-reports. Which this patch
does. 

Does this look correct?

This doesn't affect icedtea7 since that never got the fix for
PR719: make distcheck should work in IcedTea6. Maybe that should be forward
ported to icedtea7? If so then this patch should also be applied there.

Cheers,

Mark