remove underscore from VERSION in podlators

[haarg]

When using versions with underscores, best practice is to remove the underscore on a later line, to allow using the version as a number when accessing the variable directly.

[jkeenan]

@haarg, could you run:

$ cd t; ./perl -I../lib porting/customized.t --regen; cd -

... to enable t/porting/customized.t to pass? Thanks.

[jkeenan]

Thanks. I note that the podlators distribution is moving to semantic versioning, so we can expect to have to modify its entry in Porting/Maintainers.pl in the future.

[haarg]

The underscores only exist because we needed to patch the module in core. Once blead is open for new development, we should be able to just sync the new stable version and eliminate the customizations.

If in the future we need to customize a module that declares its version using the package statement, it will require extra work because that type of declaration doesn't allow underscores.