- changes the modules hierarchy to better represent the set of libaries
- list the header file that needs to be included
- remove examples/doc from api ref that is included in the guide
- add references to the guide
- fix doxygen api linking for version 1.8.0
- readd doxygen mainpage to config file
- fix a couple of doxygen doc bugs
Replaces obsolete calls to nla_get_addr() and nla_get_data()
with nl_addr_alloc_attr() respectively nl_data_alloc_attr().
Also fixes missing error handling while parsing routing multipath
configuration.