Adding symbol for inch
Fleshing out the Length unit
Adding Time and Length helpers
Fixing helpers for java 1.7
removing createQuantity methods
Removing stray createQuantity
Fixing template unit handler for primitive numbers
Length: wavelength - transmittance
XMLMockObjects: Fix usage of Length.
FormatTools: PositiveInteger becomes Length.

Conflicts:
	components/formats-api/src/loci/formats/FormatTools.java
Fix readers using PositiveInteger.
Length: wavelength - light sources
Fix unit test.
Fix Mock objects.
Merge pull request #13 from bpindelski/transmittance-wavelength

Length: wavelength - transmittance
Length: wavelength - emission and excitation
Length: well origin
Return length object.

To avoid conflict, I did not use import...
Use Length for plate well origin
Modify readers to support length quantity for wavelength.