Travis fix: The DIRECTORY tag on get_filename_component( ) was introduced

in cmake 2.8.10.2, which Travis CI does not have by default.  Revert to
the old name PATH.

Author: Kent Knox

src/tests/copyTestDependencies.cmake.in

@@ -18,7 +18,7 @@ endif( )
 
 #    message( fixedTestLocation ": ${fixedTestLocation}" )
 # Get the directory that the test executable resides in; this helps get_prerequisites( ) find dependent libraries
-get_filename_component( testDir "${fixedTestLocation}" DIRECTORY )
+get_filename_component( testDir "${fixedTestLocation}" PATH )
 #    message( testDir ": ${testDir}" )
 
 set( installPath "" )
@@ -32,8 +32,8 @@ endif( )
 set( depList "" )
 
 #This logic assumes that FindFFTW.cmake has been called
-get_filename_component( fftwDirSingle "@FFTW_SINGLE_PRECISION_LIBRARIES@" DIRECTORY )
-get_filename_component( fftwDirDouble "@FFTW_DOUBLE_PRECISION_LIBRARIES@" DIRECTORY )
+get_filename_component( fftwDirSingle "@FFTW_SINGLE_PRECISION_LIBRARIES@" PATH )
+get_filename_component( fftwDirDouble "@FFTW_DOUBLE_PRECISION_LIBRARIES@" PATH )
 
 if( EXISTS "${fftwDirSingle}" )
     list( APPEND depList "${fftwDirSingle}" )
@@ -47,8 +47,8 @@ if( ${fftwDiffDirs} AND EXISTS "${fftwDirDouble}" )
 endif( )
 
 #This logic assumes that FindGTest.cmake has been called
-get_filename_component( gtestDir "@GTEST_LIBRARY@" DIRECTORY )
-get_filename_component( gtestDirDebug "@GTEST_LIBRARY_DEBUG@" DIRECTORY )
+get_filename_component( gtestDir "@GTEST_LIBRARY@" PATH )
+get_filename_component( gtestDirDebug "@GTEST_LIBRARY_DEBUG@" PATH )
 
 if( EXISTS "${gtestDir}" )
     list( APPEND depList "${gtestDir}" )
@@ -62,7 +62,7 @@ if( ${gtestDiffDirs} AND EXISTS "${gtestDirDebug}" )
 endif( )
 
 #This logic assumes that FindOpenCL.cmake has been called
-get_filename_component( openclDir "@OPENCL_LIBRARIES@" DIRECTORY )
+get_filename_component( openclDir "@OPENCL_LIBRARIES@" PATH )
 
 if( EXISTS "${openclDir}" )
     list( APPEND depList "${openclDir}" )