code cleanup
added constants definitions to (vicare platform constants)
fixed definitions in features.c
added some networking functions
more networking functions
more networking functions in (vicare glibc)
more networking functions in (vicare glibc)
more networking functions in (vicare glibc)
more definitions in (vicare platform constants)
more constants in (vicare platform constants)
documentation review
fixed missing title in documentation menu
added "network" as valida argument to the syntax "endianness"
more references to manual pages in the documentation
more constants in (vicare platform constants)
more platform constants
more manual page references in the documentation
more platform constants
more platform constants
added ethernet address manipulation routines to (vicare linux)