Remove unnecessary/unused UserName plist keys.

Fixes #18293.
Add Kickstarter supporters file.
Replace literal paths to ruby with RUBY_PATH
rrdtool: fix pathname comparisons
harfbuzz 0.9.15
coreutils: disable gmp

Closes #19007.
brew audit: find *.github.com pages

And suggest changing them to *.github.io

Closes #19012.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
mxcl.github.com/homebrew => brew.sh
p11-kit: fix freeing uninitialized memory error in test cases.

* Comment out free call in library uninit. The memory being freed may be
  uninitialized. This could be a memory leak, but hard to verify without
  working valgrind.

Closes #18983.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>