Three changes:
- Download URL corrected.
- Now depends on pkg-config. Also depends on Cairo as poppler-glib requires
Cairo > 1.10, OS X 10.6.7 provides 1.8.6, and pkg-config needs the keg-only
formula to be on the PKG_CONFIG_PATH.
- Tests to see if Poppler was built with Glib support and offers a helpful
error message if this backend is missing.
Signed-off-by: Adam Vandenberg <flangy@gmail.com>
