New package: kdiff3-0.9.98

This commit adds the 'kdiff3' package to the repo.

(*) Patched the generated makefile to use /usr instead of /usr/local.

PATCH 2: Fixed review comment and removed arm builds

(*) Clarified short description.
(*) Removed dead comments.
(*) Fixed maintainer and license to use SPDX expr.
(*) Removed arm builds since qmake is missing on those platforms.

PATCH 3: Fixed missing endquote in maintainer line

(*) Removed comments regarding license.
(*) Move qt tools to hostmakedepends to allow compile on arm/aarch64.

PATCH 4: Rework per review comment

(*) Fixed hostmakedepends and makedepends
(*) Converted to use qmake build_style per review comment

PATCH 5: Fix review comment

(*) Removed end of file newline.
(*) use ${SOURCEFORGE_SITE} instead of fixed URL.

srcpkgs/kdiff3/template

@@ -0,0 +1,21 @@
+# Template file for 'kdiff3'
+pkgname=kdiff3
+version=0.9.98
+revision=1
+build_wrksrc=src-QT4
+build_style=qmake
+makedepends="qt-devel"
+short_desc="A file comparator/merge tool (qt4 version, no kde dep)"
+maintainer="Ben Sung Hsu <pobetiger+kdiff3@gmail.com>"
+license="GPL-2.0-or-later"
+homepage="http://kdiff3.sourceforge.net/"
+distfiles="${SOURCEFORGE_SITE}/kdiff3/kdiff3-${version}.tar.gz"
+checksum=802c1ababa02b403a5dca15955c01592997116a24909745016931537210fd668
+
+if [ "$CROSS_BUILD" ]; then
+	hostmakedepends+="qt-devel qt-host-tools"
+fi
+
+pre_install() {
+	sed -ie 's@usr\/local@usr@g' Makefile
+}