@$(RM) hotspot.log in J2SE Rules.gmk fails in read-only file system

Many of my make/ subdirs contain a hotspot.log, created when
I built on solsparc, eg:
  make/com/sun/javah/hotspot.log

If I then build on a different machine in which my workspace
is mounted read-only, (and use ALT_OUTPUTDIR to point to a local
output area), then these $(RM) hotspot.log commands fail and kill
my build. True, $(RM) does an rm -f, but that still fails when
the dir or whole mount is read only.

###@###.### 2005-06-06 18:03:54 GMT