libxml2: update recipe

* Update zlib in [BUILD_]REQUIRES.
* Build separate devel package.

dev-libs/libxml2/libxml2-2.8.0.recipe

@@ -4,24 +4,22 @@ LICENSE="MIT"
 COPYRIGHT="1998-2003 Daniel Veillard.  All Rights Reserved."
 SRC_URI="ftp://xmlsoft.org/libxml2/libxml2-2.8.0.tar.gz"
 CHECKSUM_MD5="c62106f02ee00b6437f0fb9d370c1093"
-REVISION="2"
+REVISION="3"
 ARCHITECTURES="x86_gcc2 ?x86"
 
 PATCHES="libxml2-2.8.0.patch"
 
 PROVIDES="
 	libxml2 = $portVersion compat >= 2
-	cmd:xml2_config = $portVersion compat >= 2
 	cmd:xmlcatalog = $portVersion compat >= 2
 	cmd:xmllint = $portVersion compat >= 2
 	lib:libxml2 = $portVersion compat >= 2
 	"
 REQUIRES="
 	haiku >= $haikuVersion
-	zlib
+	lib:libz
 	"
 BUILD_REQUIRES="
-	$REQUIRES
 	cmd:aclocal
 	cmd:autoconf
 	cmd:automake
@@ -29,6 +27,7 @@ BUILD_REQUIRES="
 	cmd:ld
 	cmd:libtoolize
 	cmd:make
+	devel:libz
 	"
 BUILD_PREREQUIRES="
 	haiku_devel >= $haikuVersion
@@ -66,6 +65,15 @@ INSTALL()
 	fixPkgconfig
 	mv $libDir/xml2Conf.sh $developLibDir/
 	fixDevelopLibDirReferences $developLibDir/xml2Conf.sh $binDir/xml2-config
+
+	# devel package
+	packageEntries devel \
+		$binDir/xml2-config \
+		$dataDir \
+		$developDir \
+		$docDir \
+		$manDir/man1/xml2-config.1 \
+		$manDir/man3
 }
 
 TEST()
@@ -126,3 +134,14 @@ DESCRIPTION="
 	on but it would be far too early to make any conformance statement about 
 	it at the moment.
 	"
+
+# ----- devel package -------------------------------------------------------
+
+PROVIDES_devel="
+	libxml2_devel = $portVersion
+	cmd:xml2_config = $portVersion compat >= 2
+	devel:libxml2 = $portVersion compat >= 2
+	"
+REQUIRES_devel="
+	libxml2 == $portVersion base
+	"