Move the dependency on Class::ISA to emulab-boss and not p5-RPC-Async.

It is really a dependency on the version of perl installed.

install/ports/emulab-boss/Makefile

@@ -221,6 +221,11 @@ RUN_DEPENDS+=	\
 	${LOCALBASE}/lib/perl5/site_perl/${PERL_VER}/Privileges/Drop.pm:${PORTSDIR}/misc/p5-Privileges-Drop \
 	${LOCALBASE}/lib/perl5/site_perl/${PERL_VER}/IO/EventMux.pm:${PORTSDIR}/misc/p5-IO-EventMux \
 	${LOCALBASE}/lib/perl5/site_perl/${PERL_VER}/${PERL_ARCH}/IO/EventMux/Socket/MsgHdr.pm:${PORTSDIR}/misc/p5-IO-EventMux-Socket-MsgHdr
+.if ${PORTVERSION} == "5.0"
+# perl 5.12 and beyond wants this
+RUN_DEPENDS+= \
+	${LOCALBASE}/lib/perl5/site_perl/${PERL_VER}/Class/ISA.pm:${PORTSDIR}/devel/p5-Class-ISA
+.endif
 .endif
 
 .if ${OSMAJOR} >= 6
@@ -245,11 +250,6 @@ RUN_DEPENDS+= \
 	${LOCALBASE}/lib/perl5/site_perl/${PERL_VER}/LWP/Protocol/https.pm:${PORTSDIR}/www/p5-LWP-Protocol-https
 .endif
 
-.if ${OSMAJOR} >= 9
-RUN_DEPENDS+= \
-	${LOCALBASE}/lib/perl5/site_perl/${PERL_VER}/Class/ISA.pm:${PORTSDIR}/devel/p5-Class-ISA
-.endif
-
 # make sure these get installed
 RUN_DEPENDS+=	\
 	${LOCALBASE}/libdata/xorg/libraries:${PORTSDIR}/x11/xorg-libraries \

install/ports/p5-RPC-Async/Makefile

@@ -9,8 +9,7 @@ MAINTAINER=	sklower@berkeley.edu
 COMMENT=	Perl5 module providing a framework for Asynchronous RPC
 
 RUN_DEPENDS=    ${SITE_PERL}/IO/EventMux.pm:${PORTSDIR}/misc/p5-IO-EventMux \
-		${SITE_PERL}/Privileges/Drop.pm:${PORTSDIR}/misc/p5-Privileges-Drop \
-		${SITE_PERL}/Class/ISA.pm:${PORTSDIR}/devel/p5-Class-ISA
+		${SITE_PERL}/Privileges/Drop.pm:${PORTSDIR}/misc/p5-Privileges-Drop
 
 BUILD_DEPENDS=  ${RUN_DEPENDS}