Also corrected many formatting errors in the comments in C and H files

STYLE: integrateLimits() -> integrate() for consistency with
  DataEntry/polynomial.  Rename old 'integrate', 'integrateMinus1'
  methods to 'integral', 'integralMinus1' (ie, substantive instead of
  verb for clarity).

- For example,
    // optionally define extra controls for the output formats
    formatOptions
    {
        ensight
        {
            format  binary;
        }
    }

These are passed to the writer that support a dictionary of options.
Otherwise the normal null constructor is used.

STYLE: move DataEntry to OpenFOAM/primitives/functions

- pointSolid->solidProperties
- pointSolidMixure->solidMixtureProperties
- liquids->liquidProperties
- liquidMixture->liquidMoxtureProperties

(setting typeName to word::null only handled by IOdictionary)

This reverts commit 2e1e671d.