exiv2: Enable managing video and web image metadata

From the book *Beyond Linux From Scratch* [1]:

> --enable-video: This switch enables managing video metadata.
>
> --enable-webready: This switch enables managing web image metadata.

This results in the configuration below.

```
-- ------------------------------------------------------------------
-- exiv2 0.26 configure results        <http://www.exiv2.org>
-- Building PNG support:               YES
-- Building shared library:            YES
-- XMP metadata support:               YES
-- Building static libxmp:             YES
-- Native language support:            YES
-- Conversion of Windows XP tags:      YES
-- Nikon lens database:                YES
-- Commercial build:                   NO
-- Build the unit tests:               YES
-- Building translations files:        NO
-- Building video support:             NO
-- Building webready support:          NO
-- ------------------------------------------------------------------
```

[1] http://www.linuxfromscratch.org/blfs/view/svn/general/exiv2.html

exiv2.be0

@@ -53,9 +53,11 @@ SRCURL[0]="http://www.exiv2.org/builds/exiv2-${PKGVERSION}-trunk.tar.gz"
 #    bee_patch "${@}"
 #}
 
-#mee_configure() {
-#    bee_configure
-#}
+mee_configure() {
+    bee_configure \
+        --enable-video \
+        --enable-webready
+}
 
 #mee_build() {
 #    bee_build