USE_BZIP2 and USE_XZ are not used anymore in the ports tree mark them as

unsupported

CHANGES

@@ -10,6 +10,12 @@ in the release notes and/or placed into UPDATING.
 
 All ports committers are allowed to commit to this file.
 
+20150407:
+AUTHOR: bapt@FreeBSD.org
+
+  USE_XZ and USE_BZIP2 are not supported anymore, they have been replaced by
+  USES=tar:bzip2 and tar:xz
+
 20150328:
 AUTHOR: bapt@FreeBSD.org
 

Mk/bsd.port.mk

@@ -1460,13 +1460,7 @@ ${_f}_ARGS:=	${f:C/^[^\:]*(\:|\$)//:S/,/ /g}
 .include "${USESDIR}/${f:C/\:.*//}.mk"
 .endfor
 
-.if defined(USE_BZIP2)
-EXTRACT_SUFX?=			.tar.bz2
-.elif defined(USE_XZ)
-EXTRACT_SUFX?=			.tar.xz
-.else
 EXTRACT_SUFX?=			.tar.gz
-.endif
 
 # You can force skipping these test by defining IGNORE_PATH_CHECKS
 .if !defined(IGNORE_PATH_CHECKS)

Mk/bsd.sanity.mk

@@ -151,8 +151,8 @@ SANITY_UNSUPPORTED=	USE_OPENAL USE_FAM USE_MAKESELF USE_ZIP USE_LHA USE_CMAKE \
 		USE_GETTEXT USE_GMAKE USE_SCONS USE_DRUPAL NO_INSTALL_MANPAGES \
 		INSTALLS_SHLIB USE_PYDISTUTILS PYTHON_CONCURRENT_INSTALL \
 		PYDISTUTILS_AUTOPLIST PYTHON_PY3K_PLIST_HACK PYDISTUTILS_NOEGGINFO \
-		USE_PYTHON_PREFIX
-SANITY_DEPRECATED=	USE_XZ USE_BZIP2 PYTHON_PKGNAMESUFFIX
+		USE_PYTHON_PREFIX USE_BZIP2 USE_XZ
+SANITY_DEPRECATED=	PYTHON_PKGNAMESUFFIX
 
 USE_OPENAL_ALT=		USES=openal
 USE_FAM_ALT=		USES=fam