Initial commit of SVD input testcase
Test cases for input and output
Add Python and R scripts for generating answers for output tests
Add the generated answer file
Some minor changes

Added a utility function modified_Gpdiff

Corrected some minor typos
Changed answer file names to avoid conflicts
modified_Gpdiff needs return
Lots of changes in output tests
Finished output tests for svd
Removed unnecessary files
Let input tests use different answer files
Started adding answer files for output tests