Add support for SCons build system

Enable projects that are using SCons to also work with ffpbuildenv
New package wget

GNU Wget is a free software package for retrieving files using HTTP,
HTTPS and FTP, the most widely-used Internet protocols. It is a
non-interactive commandline tool, so it may easily be called from
scripts, cron jobs, terminals without X-Windows support, etc.
New package subvesion

The goal of the Subversion project is to build a version control
system that is a compelling replacement for CVS in the open source
community.  The software is released under an Apache/BSD-style open
source license.

This is a meta-package.  It installs no files, but it depends on all
the Subversion components, including the base package with the
subversion client and server, the apache module, and four language
bindings.  (If you just want the basic svn and svnadmin programs see
devel/subversion-base.)
New package nettle

The nettest and nettestd commands perform client and server
performance tests for various types of interprocess communication.
These tests time the data throughput of pipes and UNIX domain, TCP,
and UDP socket connections.

The nettest command performs the client side of the test; the
nettestd command performs the server side of the test.
New package scons

SCons is an Open Source software construction tool--that is, a build tool;
an improved substitute for the classic Make utility; a better way to build
software.
New package serf

The serf library is a C-based HTTP client library built upon the Apache
Portable Runtime (APR) library. It multiplexes connections, running the
read/write communication asynchronously. Memory copies and transformations
are kept to a minimum to provide high-performance operation.
New package git

This package is a meta package, collecting the components normally
expected to be installed for the GIT distributed version control
suite (the tool itself, the tk-based browser gitk, and the man pages).