[gentoo-java] Using export VAR= instead of unset

["Petteri Räty" <betelgeuse@gentoo.org>]

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See https://bugs.gentoo.org/show_bug.cgi?id=189417#c11
I committed the attached patch that should make java-utils-2 again
behave in the same way as before the hooks were removed.

Regards,
Petteri

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Index: java-utils-2.eclass
===================================================================
RCS file: /var/cvsroot/gentoo-x86/eclass/java-utils-2.eclass,v
retrieving revision 1.96
diff -u -r1.96 java-utils-2.eclass
--- java-utils-2.eclass	25 Nov 2007 07:51:41 -0000	1.96
+++ java-utils-2.eclass	26 Nov 2007 20:36:46 -0000
@@ -2049,6 +2079,7 @@
 #
 # -----------------------------------------------------------------------------
 java-pkg_init() {
+	debug-print-function ${FUNCNAME} $*
 	unset JAVAC
 	unset JAVA_HOME
 
@@ -2066,7 +2097,7 @@
 	fi
 
 	if [[ -z ${accept} ]]; then
-		unset _JAVA_OPTIONS
+		export _JAVA_OPTIONS=
 		# phase hooks make this run many times without this
 		I_WANT_GLOBAL_JAVA_OPTIONS="true"
 	fi
@@ -2084,15 +2115,18 @@
 	# Do some QA checks
 	java-pkg_check-jikes
 
+	# Can't use unset here because Portage does not save the unset
+	# see https://bugs.gentoo.org/show_bug.cgi?id=189417#c11
+
 	# When users have crazy classpaths some packages can fail to compile.
 	# and everything should work with empty CLASSPATH.
 	# This also helps prevent unexpected dependencies on random things
 	# from the CLASSPATH.
-	unset CLASSPATH
+	export CLASSPATH=
 
 	# Unset external ANT_ stuff
-	unset ANT_TASKS
-	unset ANT_OPTS
+	export ANT_TASKS=
+	export ANT_OPTS=
 }
 
 # ------------------------------------------------------------------------------

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