Unbreak kde4/kompare

Use ${MODKDE4_DEP_DIR}/libkomparediff2 and don't fetch
kde-applications/libkomparediff2, if it is installed.

Spotted by naddy@ Thanks!

x11/kde4/kompare/Makefile

@@ -1,14 +1,13 @@
-# $OpenBSD: Makefile,v 1.7 2018/06/29 22:16:29 espie Exp $
+# $OpenBSD: Makefile,v 1.8 2018/08/13 09:13:30 rsadowski Exp $
 
 COMMENT =	file compare utility for KDE
 DISTNAME =	kompare-${MODKDE4_VERSION}
-REVISION =	4
+REVISION =	5
 
 CATEGORIES =	textproc devel
 HOMEPAGE =	http://projects.kde.org/projects/kde/kdesdk/kompare
 
 SHARED_LIBS =	komparedialogpages	52.0 # 4.7
-#SHARED_LIBS +=	komparediff2		51.0 # 4.7
 SHARED_LIBS +=	kompareinterface	52.0 # 4.7
 
 WANTLIB =  c m pthread
@@ -20,9 +19,12 @@ WANTLIB += ${KDE4LIB}/kparts ${KDE4LIB}/ktexteditor ${KDE4LIB}/nepomuk
 WANTLIB += ${KDE4LIB}/nepomukutils
 WANTLIB += soprano
 
-LIB_DEPENDS =	${MODKDE4_DEP_DIR}/libkomparediff2>=${MODKDE4_DEP_VERSION}
-
 RUN_DEPENDS =	devel/desktop-file-utils \
 		x11/gtk+3,-guic
 
+LIB_DEPENDS =	${MODKDE4_DEP_DIR}/libkomparediff2
+
+CONFIGURE_ARGS +=	-DLIBKOMPAREDIFF2_LIBRARIES="komparediff2" \
+			-DLIBKOMPAREDIFF2_INCLUDE_DIR="${LOCALBASE}/include/kde4/libkomparediff2"
+
 .include <bsd.port.mk>

x11/kde4/kompare/patches/patch-CMakeLists_txt

@@ -0,0 +1,13 @@
+$OpenBSD: patch-CMakeLists_txt,v 1.1 2018/08/13 09:13:30 rsadowski Exp $
+
+Index: CMakeLists.txt
+--- CMakeLists.txt.orig
++++ CMakeLists.txt
+@@ -6,7 +6,6 @@ find_package(KDE4 REQUIRED)
+ include(KDE4Defaults)
+ add_definitions (${QT_DEFINITIONS} ${KDE4_DEFINITIONS})
+ 
+-find_package(LibKompareDiff2 REQUIRED)
+ include_directories (${CMAKE_SOURCE_DIR} ${CMAKE_BINARY_DIR} ${KDE4_INCLUDES} ${LIBKOMPAREDIFF2_INCLUDE_DIR})
+ 
+ add_subdirectory( doc )