MacOS::Version: add :tiger
sqlite 3.7.17
zeromq: apply patch for strndup on 10.6

Fixes #19877.
link: extract keg-only check into a helper method
build: use ARGV.interactive? instead of .flag?
Add test for ARGV.flag?
Simplify implementation of ARGV.flag? and .switch?
CompilerSelector: raise when no compatible compiler

This replaces the old behaviour of falling back to the original
compiler with no messaging.

Fixes #19170.
Fixes mistydemeo/tigerbrew#45.
Add gcc 4.0 to CompilerSelector compiler queue
PyPy 2.0.2

Closes #19975.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
percona-server: fix checksum

Closes #19973.
html-xml-utils 6.4

Closes #19969.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
PyPy: fix version number

Closes #19979.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
editorconfig: add --HEAD

Closes #19961.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Libvirt 1.0.5.1

Closes #19958.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Cassandra 1.2.5

Closes #19956.

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