Travis Trusty testing fix ups

Go back to Travis testing nodejs on Precise - can't seem to avoid
node-gyp incompatibility that does not happens in normal Ubuntu Trusty.
Ruby and Python 3.4 testing corrections for testing on Travis.

.travis.yml

@@ -55,8 +55,6 @@ matrix:
     - compiler: gcc
       os: linux
       env: SWIGLANG=javascript ENGINE=node
-      sudo: required
-      dist: trusty
     - compiler: gcc
       os: linux
       env: SWIGLANG=javascript ENGINE=jsc
@@ -128,7 +126,7 @@ matrix:
       dist: trusty
     - compiler: gcc
       os: linux
-      env: SWIGLANG=python PY3=3 # 3.4
+      env: SWIGLANG=python PY3=3 VER=3.4
       sudo: required
       dist: trusty
     - compiler: gcc
@@ -148,7 +146,7 @@ matrix:
       dist: trusty
     - compiler: gcc
       os: linux
-      env: SWIGLANG=python SWIG_FEATURES=-builtin PY3=3 # 3.4
+      env: SWIGLANG=python SWIG_FEATURES=-builtin PY3=3 VER=3.4
       sudo: required
       dist: trusty
     - compiler: gcc
@@ -178,7 +176,12 @@ matrix:
       dist: trusty
     - compiler: gcc
       os: linux
-      env: SWIGLANG=ruby
+      env: SWIGLANG=ruby VER=1.9.3
+      sudo: required
+      dist: trusty
+    - compiler: gcc
+      os: linux
+      env: SWIGLANG=ruby VER=2.0.0
       sudo: required
       dist: trusty
     - compiler: gcc

Tools/travis-linux-install.sh

@@ -33,7 +33,10 @@ case "$SWIGLANG" in
 	"javascript")
 		case "$ENGINE" in
 			"node")
-				sudo apt-get install -qq nodejs node-gyp
+				sudo add-apt-repository -y ppa:chris-lea/node.js
+				sudo apt-get -qq update
+				sudo apt-get install -qq nodejs rlwrap
+				sudo npm install -g node-gyp
 				;;
 			"jsc")
 				sudo apt-get install -qq libwebkitgtk-dev