Fix paths in pkg-config file (#556)
Fix paths in pkg-config file (#556)

pkg-config should be giving absolute paths rather than relative paths.
jbeder/yaml-cpp,WrinklyNinja/yaml-cpp,WrinklyNinja/yaml-cpp,graehl/yaml-cpp,SimplyKnownAsG/yaml-cpp,tangrams/yaml-cpp,graehl/yaml-cpp,tangrams/yaml-cpp,jbeder/yaml-cpp,SimplyKnownAsG/yaml-cpp,loot/yaml-cpp,SimplyKnownAsG/yaml-cpp,WrinklyNinja/yaml-cpp,loot/yaml-cpp,graehl/yaml-cpp,loot/yaml-cpp,jbeder/yaml-cpp,graehl/yaml-cpp,dand-oss/yaml-cpp,dand-oss/yaml-cpp,tangrams/yaml-cpp,loot/yaml-cpp,dand-oss/yaml-cpp,graehl/yaml-cpp,jbeder/yaml-cpp,dand-oss/yaml-cpp,WrinklyNinja/yaml-cpp,dand-oss/yaml-cpp,jbeder/yaml-cpp,SimplyKnownAsG/yaml-cpp,tangrams/yaml-cpp