- PCH support (needs mmap at a fixed address)
	http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39618
- test all arches (alpha will probably break, hppa didn't work for 4.2.4)
- go?
- (sub)packaging
- gcj-dbtool hangs on amd64, needs to be killed (disabled at build for now)
	apparently, threads and signal handling are to blame:
	https://bugzilla.redhat.com/show_bug.cgi?id=179002
	https://bugzilla.redhat.com/show_bug.cgi?id=179228
	https://bugzilla.redhat.com/show_bug.cgi?id=180567