packaging/gentoo: Updated ebuild script.

See:
ruediger#13 (comment)
Signed-off-by: Rüdiger Sonderfeld <ruediger@c-plusplus.de>

packaging/vobsub2srt-9999.ebuild

@@ -1,13 +1,15 @@
 # -*- mode:sh; -*-
-# Copyright 1999-2012 Gentoo Foundation
+
+# See https://github.com/ruediger/VobSub2SRT/issues/13
+
+# Copyright 1999-2013 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
-# $Header: /media-video/vobsub2srt/ChangeLog,v 0.1 2012/01/06 19:15:04 thawn Exp $
 
 EAPI="4"
 
 EGIT_REPO_URI="git://github.com/ruediger/VobSub2SRT.git"
 
-inherit git-2
+inherit cmake-utils git-2
 
 IUSE=""
 
@@ -21,13 +23,3 @@ KEYWORDS="~amd64 ~x86"
 RDEPEND=">=app-text/tesseract-2.04-r1
     >=virtual/ffmpeg-0.6.90"
 DEPEND="${RDEPEND}"
-src_configure() {
-    econf
-}
-src_compile() {
-    emake || die
-}
-
-src_install() {
-    emake DESTDIR="${D}" install || die
-}