reconcilio should consider RPATH/RUNPATH

[dleverton]

reconcilio currently assumes that all libraries will be found in SEARCH_DIRS and/or ld.so.conf. Changing this probably means having a way for the library paths different for each binary (rather than throwing every RPATH/RUNPATH directory into the global list) and using just ld.so.conf as a common base. Be sure to consider that some packages (firefox IIRC) put their libraries in a non-standard location, but use LD_LIBRARY_PATH to find them - currently we support that because they happen to be in SEARCH_DIRS.