pypy: distribute 0.6.45
flac: inline flac2mp3 script

Closes #20448.
cfitsio: compile examples directly to bin
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
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
Add parens for readability