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+New: Added a third test variant to the testsuite driver: For a test
+consisting of a test.prm.in (and a test.output) file the test.prm.in file
+will be configured/preprocessed to a test.prm file. This is done with the
+CMake macro CONFIGURE_FILE that replaces all strings @VARIABLE@ with the
+contents of the corresponding CMake variable. This is useful in particular
+to conveniently substitute @SOURCE_DIR@ with the full source directory path
+of the test.
+<br>
+(Matthias Maier, 2018/03/21)
+