hdf5_ep

[svn-r3827] Purpose:
    Bug fix.
Description:
    'make distclean' is broken on FreeBSD 4.3, with some syntax errors.  I have
    a feeling that the make command is more picky in FBSD 4.3 than in 4.2 which
    is what is causing these errors to crop up now.
Solution:
    Add missing semicolon to line in 'clean' target and take out bogus '-'s
    in front of "$(RM)" commands which are already in if's
Platforms tested:
    FreeBSD 4.3 (hawkwind)