Update hoe to 3.14.2.

=== 3.14.2 / 2015-09-14

* 1 minor enhancement:

  * Updated Hoe.pdf to reflect reality (removed all rubyforge references).

* 1 bug fix:

  * Fixed extension paths. Again. Damnit. I normally don't release after midnight.

=== 3.14.1 / 2015-09-13

* 1 bug fix:

  * *sigh* fixed bug setting up extensions data for spec.

=== 3.14.0 / 2015-09-12

* 5 minor enhancements:

  * Added so_name variable to bin/sow for using hoe w/ c-extensions.
  * Default config now excludes tmp, .git, and .bundle.
  * Extended :compiler plugin to define #extension for hoe spec decls.
  * Failures to detect/load rake-compiler are handled gracefully.
  * Removed generation of synthesized .gemtest file. Dead.

* 1 bug fix:

  * Fix PRERELEASE= for packaging against newer versions of rubygems. (drbrain)

(taca)