RF: re-work applyxfm tests - no longer rely on external data. Use benchmark

unit_tests/applyxfm4D/matfiles_four_digit/MAT_0012

unit_tests/applyxfm4D/matfiles_four_digit/MAT_0013

unit_tests/applyxfm4D/matfiles_four_digit/MAT_0014

unit_tests/applyxfm4D/matfiles_four_digit/MAT_0015

unit_tests/applyxfm4D/matfiles_user_prefix/.DS_Store

unit_tests/applyxfm4D/matfiles_user_prefix/myprefix_0000

unit_tests/applyxfm4D/matfiles_user_prefix/myprefix_0001

unit_tests/applyxfm4D/matfiles_user_prefix/myprefix_0002

unit_tests/applyxfm4D/matfiles_user_prefix/myprefix_0003

unit_tests/applyxfm4D/matfiles_user_prefix/myprefix_0004

unit_tests/applyxfm4D/matfiles_user_prefix/myprefix_0005

unit_tests/applyxfm4D/matfiles_user_prefix/myprefix_0006

unit_tests/applyxfm4D/matfiles_user_prefix/myprefix_0007

unit_tests/applyxfm4D/matfiles_user_prefix/myprefix_0008

unit_tests/applyxfm4D/matfiles_user_prefix/myprefix_0009

unit_tests/applyxfm4D/matfiles_user_prefix/myprefix_0010

unit_tests/applyxfm4D/matfiles_user_prefix/myprefix_0011

unit_tests/applyxfm4D/matfiles_user_prefix/myprefix_0012

unit_tests/applyxfm4D/matfiles_user_prefix/myprefix_0013

unit_tests/applyxfm4D/matfiles_user_prefix/myprefix_0014