Make variable name style consistent and safe.

[kaladay]

Remove the non-word-characters, such as the dash -, from the variable names.

These have found to be problematic when in Camunda and cannot be safely used.
However, the build time has no such problems.

Having a different structure for the build time and the runtime/camundatime variables is rather confusing and inconsistent.

This is a proposal to make all of the variables to be camel case.

Proposal PR is here: #409