Merge Begasus' fixed libwebp recipe.

Had to do it manually, there were conflicts. Closes #1879.

media-libs/libwebp/libwebp-0.6.1.recipe

@@ -11,7 +11,7 @@ channels."
 HOMEPAGE="https://developers.google.com/speed/webp"
 COPYRIGHT="2011 Google Inc."
 LICENSE="BSD (3-clause)"
-REVISION="1"
+REVISION="2"
 SOURCE_URI="http://downloads.webmproject.org/releases/webp/libwebp-$portVersion.tar.gz"
 CHECKSUM_SHA256="06503c782d9f151baa325591c3579c68ed700ffc62d4f5a32feead0ff017d8ab"
 
@@ -28,7 +28,6 @@ PROVIDES="
 	cmd:dwebp$secondaryArchSuffix
 	cmd:gif2webp$secondaryArchSuffix
 	cmd:img2webp$secondaryArchSuffix
-	cmd:vwebp$secondaryArchSuffix
 	cmd:webpmux$secondaryArchSuffix
 	cmd:webpinfo$secondaryArchSuffix
 	"
@@ -36,10 +35,7 @@ REQUIRES="
 	haiku$secondaryArchSuffix
 	lib:libjpeg$secondaryArchSuffix
 	lib:libgif$secondaryArchSuffix
-	lib:libGL$secondaryArchSuffix
-	lib:libglu$secondaryArchSuffix
 	lib:libpng16$secondaryArchSuffix
-	lib:libSDL$secondaryArchSuffix
 	lib:libtiff$secondaryArchSuffix
 	lib:libz$secondaryArchSuffix
 	"
@@ -63,10 +59,7 @@ BUILD_REQUIRES="
 	haiku${secondaryArchSuffix}_devel
 	devel:libjpeg$secondaryArchSuffix
 	devel:libgif$secondaryArchSuffix
-	devel:libGL$secondaryArchSuffix
-	devel:libglu$secondaryArchSuffix
 	devel:libpng16$secondaryArchSuffix
-	devel:libSDL$secondaryArchSuffix
 	devel:libtiff$secondaryArchSuffix >= 5
 	devel:libz$secondaryArchSuffix
 	"
@@ -85,7 +78,6 @@ defineDebugInfoPackage libwebp$secondaryArchSuffix \
 	$binDir/dwebp \
 	$binDir/gif2webp \
 	$binDir/img2webp \
-	$binDir/vwebp \
 	$binDir/webpmux \
 	$binDir/webpinfo \
 	$libDir/libwebp.so.7.0.1 \