Check for proper case handling of input/output fields for all tools

[Jason Vander Heiden]

We need to check that column name upper/lowercase conversions and input/output are handled correctly for all scripts.

The intended behavior is that commandline arguments and column names should be handled in a case-insensitive manner, but still maintain a data standard and avoid the computational expense of constantly converting the text on access.

Something along the lines of:

1. Covert field names provided in commandline arguments to same case.
2. Fields in IgRecord should be stored in a uniform case to avoid having to perform conversions all the time.
3. Output should be in a fixed case.

I believe this is currently working for DefineClones, but I'm not sure about the others. This should be cleaned up when we clean up IgRecord.

[Jason Vander Heiden]

This is duplicate of issue #32. Will leave open though, as IgRecord cleanup needs to occur.

[Namita Gupta]

1. Field name arguments are converted to uppercase in all tools argument parsing.
2. Fields in IgRecord are converted to uppercase.
3. Output fields are converted to uppercase.