message: In .travis.yml, correct the cache directories.
  [skip appveyor]
diff: @@ -43,8 +43,8 @@ matrix:
  NPROCS=2
  cache:
  directories:
  - - $HOME/../hypre-2.10.0b/src/hypre/lib
  - - $HOME/../hypre-2.10.0b/src/hypre/include
  + - $TRAVIS_BUILD_DIR/../hypre-2.10.0b/src/hypre/lib
  + - $TRAVIS_BUILD_DIR/../hypre-2.10.0b/src/hypre/include
  #
  - os: linux
  compiler: gcc
  @@ -68,8 +68,8 @@ matrix:
  NPROCS=2
  cache:
  directories:
  - - $HOME/../hypre-2.10.0b/src/hypre/lib
  - - $HOME/../hypre-2.10.0b/src/hypre/include
  + - $TRAVIS_BUILD_DIR/../hypre-2.10.0b/src/hypre/lib
  + - $TRAVIS_BUILD_DIR/../hypre-2.10.0b/src/hypre/include
  #
  # Mac OS X
  #
  @@ -100,8 +100,8 @@ matrix:
  TMPDIR=/tmp
  cache:
  directories:
  - - $HOME/../hypre-2.10.0b/src/hypre/lib
  - - $HOME/../hypre-2.10.0b/src/hypre/include
  + - $TRAVIS_BUILD_DIR/../hypre-2.10.0b/src/hypre/lib
  + - $TRAVIS_BUILD_DIR/../hypre-2.10.0b/src/hypre/include
  #
  - os: osx
  # osx_image: xcode7.3
  @@ -114,8 +114,8 @@ matrix:
  TMPDIR=/tmp
  cache:
  directories:
  - - $HOME/../hypre-2.10.0b/src/hypre/lib
  - - $HOME/../hypre-2.10.0b/src/hypre/include
  + - $TRAVIS_BUILD_DIR/../hypre-2.10.0b/src/hypre/lib
  + - $TRAVIS_BUILD_DIR/../hypre-2.10.0b/src/hypre/include
  before_install:
  