Fix MATPOWER install issue in Travis-CI config.

Author: rdzman

.travis.yml

@@ -22,12 +22,13 @@ install:
 env:
   global:
     - MOST_PATH=$TRAVIS_BUILD_DIR/lib:$TRAVIS_BUILD_DIR/lib/t
-    - MPTEST_PATH=$TRAVIS_BUILD_DIR/mptest/lib:$TRAVIS_BUILD_DIR/mptest/lib/t
-    - MIPS_PATH=$TRAVIS_BUILD_DIR/mips/lib:$TRAVIS_BUILD_DIR/mips/lib/t
-    - MATPOWER_PATH=$TRAVIS_BUILD_DIR/matpower/lib:$TRAVIS_BUILD_DIR/matpower/data:$TRAVIS_BUILD_DIR/matpower/lib/t
-    - SEARCH_PATH=$MOST_PATH:$MPTEST_PATH:$MIPS_PATH:$MATPOWER_PATH
+    - MATPOWER_PATH=$TRAVIS_BUILD_DIR/matpower
 
 script:
-- octave-cli --no-gui -p $SEARCH_PATH --eval ver
-- octave-cli --no-gui -p $SEARCH_PATH --eval mpver
-- octave-cli --no-gui -p $SEARCH_PATH --eval "test_most(0,1)"
+- octave-cli --no-gui --eval ver
+
+# install MATPOWER
+- octave-cli --no-gui -p $MATPOWER_PATH --eval "install_matpower(1,1,1)"
+- octave-cli --no-gui --eval mpver
+
+- octave-cli --no-gui -p $MOST_PATH --eval "test_most(0,1)"