This reverts commit 3724f6be55.
Because there is no real correlation between DNS namesize and NAME_MAX
as far as I know. The former is about network and the latter is about
filesystem. While they might happen to be similar values for
some configurations, it's very confusing to use them this way.
It's better to have a default working for many cases.
Usually DNS servers are not optimized for embedded clients.
Users can fine tune for their environment anyway.
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.