qtcreator: depend on -devel pkgs at run-time.

... otherwise qtcreator wouldn't be able to compile anything against qt5.

srcpkgs/qtcreator/template

@@ -1,11 +1,11 @@
 # Template file for 'qtcreator'
 pkgname=qtcreator
 version=3.4.0
-revision=1
+revision=2
 wrksrc=qt-creator-opensource-src-${version}
-build_style=gnu-configure
 hostmakedepends="perl python pkg-config"
 makedepends="qt5-declarative-devel qt5-script-devel qt5-tools-devel"
+depends="${makedepends}"
 nocross=yes
 short_desc="A cross-platform IDE for Qt developers"
 maintainer="Jürgen Buchmüller <pullmoll@t-online.de>"
@@ -18,9 +18,7 @@ do_configure() {
 	qmake
 }
 do_install() {
-	make INSTALL_ROOT=${PKGDESTDIR}/usr install
-}
-post_install() {
+	make INSTALL_ROOT=${DESTDIR}/usr install
 	# Install the desktop file
 	vinstall ${FILESDIR}/qtcreator.desktop \
 		644 usr/share/applications