fixed nasty bug w/ large actor classes, fixes #88
moved uuid/mac address lookup to own units
fixed #95

this patch fixes some minor errors in the Linux implementation of
`get_mac_addresses` and `get_root_uuid`
fixed name mapping for signed char16_t, fixes #95
GCC 4.8 compatibility

the most recent changes to GCC broke some SFINAE code libcppa, this patch
solves this issue
fixed type name lookup
fixed chaining in case an actor sends to itself
changed version to 0.7.1