libports: add curl-7.29.0

For now the port is x86_* only because it depends on libcrypto which
is currently not available (as in tested) on arm.
libports: add iconv-1.14
Noux: add noux-pkg/sed
Noux: add noux-pkg/less
Noux: add noux-pkg/grep
Noux: add noux-pkg/git

Certain commands don't work because there is neither Perl nor Python in
noux (see README).
Noux: add noux-pkg/tig
Noux: add check_unblock rd in Socket [HACK]
Noux: remove ending / in path [HACK]

Ram_fs does not create directories whose path has a ending /. As a
temporary workaround we strip it in noux.
Noux: add default filename to stdio
Add noux-pkg/curl (w/o SSL)

Configure tries to use libssl.so which fails because we use a dummy
libssl.a.