install_dependencides tool for posix-type systems

tools/install_dependencides.sh

Index: tools/install_dependencides.sh
diff --git a/tools/install_dependencides.sh b/tools/install_dependencides.sh
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+#!/bin/sh
+# Copyright 2014 Google Inc.
+#
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+if command -v lsb_release > /dev/null ; then
+    case $(lsb_release -i -s) in
+        Ubuntu)
+            sudo apt-get install \
+                build-essential \
+		libfreetype6-dev \
+		libfontconfig-dev \
+		libpng12-dev \
+		libgif-dev \
+		libqt4-dev \
+		clang
+	    if [ $(lsb_release -r -s) = '14.04' ] ; then
+		sudo apt-get install \
+		    ninja-build
+	    fi
+            exit
+            ;;
+    esac
+fi
+
+echo 'unknown system'
+exit 1
+