libical upgrade to 0.48. Add missing deps on autotools because it runs a `bootstrap`. Works well on 10.8 with clang. Closes Homebrew/homebrew#14703. Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Closes Homebrew/homebrew#14653.
Version bump to 0.46 Signed-off-by: Adam Vandenberg <flangy@gmail.com>