Mark as broken on powerpc64.

While here, adjust other BROKEN lines to pacify portlint.

Approved by:	portmgr (tier-2 blanket)

lang/smalltalk/Makefile

@@ -10,6 +10,10 @@ MASTER_SITES=	GNU
 MAINTAINER=	johans@FreeBSD.org
 COMMENT=	GNU Smalltalk
 
+BROKEN_aarch64=		Fails to link: undefined reference to sbrk
+BROKEN_powerpc64=	Fails to build: gst-package: did not understand #~
+BROKEN_sparc64=		Fails to install
+
 BUILD_DEPENDS=	zip:archivers/zip \
 		gawk:lang/gawk
 LIB_DEPENDS=	libgdbm.so:databases/gdbm \
@@ -44,9 +48,6 @@ PORTDATA=	*
 
 INFO=		gst gst-base gst-libs
 
-BROKEN_aarch64=	Fails to link: undefined reference to sbrk
-BROKEN_sparc64=	Fails to install on sparc64
-
 post-patch:
 	@${REINPLACE_CMD} -e 's/ia64-\*-\* /&|amd64-*-* /' \
 		${WRKSRC}/configure