sysutils/vmdktool: Set TEST_TARGET and WWW, and fix ALL_TARGET

- Set TEST_TARGET. We need a utility called prove that comes with Perl 5 so
  set USES=perl5 as well.
- Set ALL_TARGET to vmdktool. The default one, all, attempts to build
  vmdktool.8.gz using Groff. Since the final vmdktool.8.gz is never not
  installed anyway (the install target always installs the original
  vmdktool.8), it is better to just change the ALL_TARGET to vmdktool
  directly.  This way we do not add dependencies to the build phase.
- Set WWW to give users at least some information, even though the project
  does not have its official homepage.

Reviewed by:	garga
Approved by:	maintainer (garga)
Differential Revision:	https://reviews.freebsd.org/D21464

sysutils/vmdktool/Makefile

@@ -13,7 +13,14 @@ COMMENT=	Convert VMDK files to/from raw disk images
 
 LICENSE=	BSD2CLAUSE
 
+USES=		perl5
+# We need the prove utility from Perl 5.
+USE_PERL5=	test
+
 PLIST_FILES=	bin/vmdktool \
 		man/man8/vmdktool.8.gz
 
+ALL_TARGET=	vmdktool
+TEST_TARGET=	test
+
 .include <bsd.port.mk>

sysutils/vmdktool/pkg-descr

@@ -8,3 +8,5 @@ VMDK files as the initial filesystem images for the created guests.
 vmdktool is free.
 
 Contact the author with any questions or comments.
+
+WWW: http://www.awfulhak.org/vmdktool