CDK 5.0.20120323

Closes #20216.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
denominator 1.3.0

Closes #20490.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Xcode 4.6.3
gdal: use ENV.libxml2
rust: switch head branch

Closes #20492.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
node 0.10.11

Closes #20494.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Freeze optimization flags hash rather than duping it
Use Hardware::CPU module
ENV: clean up set_cpu_flags and set_cpu_cflags usage
Make flag lists into constants
Rename single-letter variable
Use has_key? rather than accessing the value
Simplify nested conditional
Delete rather than assign nil
Assign this inline
Remove outdated comment
Use ||= instead of unless
Favor compound if over compound unless
subversion: restore neon support

Neon is needed to connect to certain WebDAV servers.

Closes #20495.
Fix constant reference