[Midnightbsd-cvs] mports: java.mk: clear bad env vars for java rather than die.

[laffer1 at midnightbsd.org]

Log Message:
-----------
clear bad env vars for java rather than die.

obtained from: FreeBSD ports

Modified Files:
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    mports/Mk/extensions:
        java.mk (r1.7 -> r1.8)
        (http://cvsweb.midnightbsd.org/mports/Mk/extensions/java.mk?r1=1.7&r2=1.8)