net/kget: fix dependencies

- Boost is a previously-implicitly-present build-dep (headers only)
- ECM similarly needed build-dep
- kdelibs4support isn't needed

net/kget/Makefile

@@ -1,10 +1,12 @@
 PORTNAME=	kget
 DISTVERSION=	${KDE_APPLICATIONS_VERSION}
+PORTREVISION=	1
 CATEGORIES=	net kde kde-applications
 
 MAINTAINER=	kde@FreeBSD.org
 COMMENT=	KDE download manager
 
+BUILD_DEPENDS=	${LOCALBASE}/include/boost/concept_check.hpp:devel/boost-libs
 LIB_DEPENDS=    libKF5Torrent.so:net-p2p/libktorrent  \
 		libassuan.so:security/libassuan \
 		libgcrypt.so:security/libgcrypt \
@@ -20,9 +22,10 @@ USES=		cmake compiler:c++11-lang desktop-file-utils kde:5 qca qt:5 \
 USE_KDE=	archive auth bookmarks codecs completion config configwidgets \
 		coreaddons crash dbusaddons emoticons guiaddons i18n \
 		iconthemes itemmodels itemviews jobwidgets kcmutils \
-		kdelibs4support kio notifications notifyconfig parts service \
+		kio notifications notifyconfig parts service \
 		solid sonnet textwidgets unitconversion wallet widgetsaddons \
-		windowsystem xmlgui
+		windowsystem xmlgui \
+		ecm_build
 USE_QT=		concurrent core dbus gui network printsupport sql widgets xml \
 		buildtools_build qmake_build