commit e1c306f2dd added sethostname using
strncpy. This replaces it with strlcpy and uses sizeof() instead of
re-calculating the buffer size.
Rename size argument for get/sethostname to match the implementation
Squashed commit of the following:
libs/libxx: Fix some confusing in naming. If the directory is called libxx, then the library must be libxx.a (unless perhaps LIBCXX is selected).
libs/: Fix paths in moved library directories.
libs: Brute force move of libc, libnx, and libxx to libs. Cannot yet build it in that configuration.
