Import Debian changes 0.15.dfsg1-3

gunroar (0.15.dfsg1-3) unstable; urgency=low
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  [ Barry deFreese ]
  * Add watch file
  * Add Homepage field to control
  * Remove XS- from VCS fields in control
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  [ Peter De Wachter ]
  * Fixed link command, patch from Arthur Loiret. (Closes: #458278)
  * Fixed typos. (Closes: #457639)
  * Fixed segfault when SDL init fails.
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  [ Miriam Ruiz ]
  * Added XS-DM-Upload-Allowed tag to control to allow uploads from Debian
    Maintainers.