Several changes: - httpd2x to always use apr, apr-util, and zlib from homebrew. Prevents errors from when Xcode is installed but com.apple.pkg.CLTools_Executables (Command Line Tools package) is not installed. Also prevents logic problems if installing modules like mod_security where you would have needed the same "--with-brewed-*" options as httpd2x - Simplify dependencies - Refuse to build modules if both "--with-brewed-httpd22" and "--with-brewed-httpd24" are present - If not using "--with-brewed-httpd2x" with modules, on 10.9, and using Xcode without com.apple.pkg.CLTools_Executables, show an error and explain why it will fail, rather than allowing a failed build with no instructions to fix - Formatting changes
Move installbuilddir into prefix...

Allows for httpd22 and httpd24 to be unlinked/relinked to more easily
switch back and forth.
Add bottles for OS X 10.7 Lion
Add bottles for OS X 10.6 Snow Leopard
Add bottles for OS X 10.8 Mountain Lion
Add bottles for OS X 10.10 Yosemite (Beta 6)
Add bottles for OS X 10.9 Mavericks