libical: add homepage, license, fix build

srcpkgs/libical/template

@@ -4,9 +4,11 @@ version=0.46
 distfiles="${SOURCEFORGE_SITE}/freeassociation/$pkgname-$version.tar.gz"
 build_style=gnu-configure
 configure_args="--enable-shared"
-revision=2
-makedepends="flex automake"
+revision=3
+makedepends="flex automake libtool"
 short_desc="Reference implementation of the iCalendar data type and format"
+homepage="http://sourceforge.net/projects/freeassociation/"
+license="LGPL-2.1, MPL-1"
 maintainer="Juan RP <xtraeme@gmail.com>"
 checksum=000762efb81501421d94ec56343648a62b3bd2884e7cdf6f638e2c207dd8f6a1
 long_desc="
@@ -16,5 +18,7 @@ subpackages="$pkgname-devel"
 
 pre_configure()
 {
-	cd ${wrksrc} && ./bootstrap
+	cd ${wrksrc}
+	sed -i "s|AM_CONFIG_HEADER|AC_CONFIG_HEADERS|g" -i configure.in
+	./bootstrap
 }