Log message:
Update RMagick to 1.15.11.

RMagick 1.15.11
o Fix bug #15887, the x_ and y_resolution
  attributes don't respect the units attribute
  (bug report from Ben Greenburg)
o Fix bug #15889, memory leak in
  Draw#composite method (bug report from Till
  Vollmer)

Log message:
Update RMagick to 1.15.10.

o Update Magick::Pixel.from_HSL, #to_HSL to work with new APIs in ImageMagick
  6.3.5-9.

Log message:
Update RMagick to 1.15.9.

Changes: Fixed bug #12089 (bug report from Hans de Graaff)

Log message:
Update ruby-RMagick to 1.15.8.

Changes:
o Fixed bug #12671, incorrect link in HTML doc (bug report
  from Thomas R. Koll
o Fixed bug #11890, incorrect usage description for
   Draw#text_undercolor in HTML doc (bug report from Ezra
   Freedman)
o Fixed bug #12706, specifying both a gravity and offsets to
  Image#composite positions the composite image incorrectly
  (bug report from Benoit Larroque)

Log message:
Update RMagick to 1.15.7.

RMagick 1.15.7
o Fix bug #11033, make distclean misses some files
  (bug report from Lucas Nussbaum)
o Work around SetMagickRegistry problem in
  ImageMagick 6.3.4-7

Log message:
Update RMagick to 1.15.6.

Changes:
RMagick 1.15.6
o Fix bug #10070, memory leak in
  Draw#get_type_metrics,
  Draw#get_multiline_type_metrics,
  Draw#annotate (bug report from Sinclair Bain)
o Fix bug #10080, scripts in examples
  directory should not be marked executable (bug
  report from Lucas Nussbaum)

Log message:
Update RMagick to 1.15.5.

Changes:
RMagick 1.15.5
o Fix bug #9637, export_pixels always exports all
  0's for 1-bit images (bug report from Doug Patterson)

Log message:
Change my mail address to @NetBSD.org.

Log message:
Update ruby-RMagick to 1.15.4.

Changes:
RMagick 1.15.4
o Fix bug #8927, RMagick and rbgsl both export the
  name ID_call (bug report from Shin Enomoto)

Log message:
Update ruby-RMagick to 1.15.3.

Changes:
RMagick 1.15.3
o Fix bug #8697, Image::Info.fill= doesn't work when creating \ 
"caption:" format
  images (bug report from choonkeat)