Hooks and interface scripts are now sourced more systematically.
Settings of wireless profiles that depend on hooks are now picked up
correctly by netctl-auto.

Suggested by: Vitor Sakaguti <vis@tutao.de>

The same functionality is provided by wpa_supplicant, so we do not need
an extra and Arch Linux specific dependency.

This also allows hooks to alter the profile to be loaded.

This covers some corner cases where, for instance, IFS does not contain
whitespace characters.

Turn "-L" into a default value of DhcpcdOption=, making it possible to forego
the parameter by setting the variable to an empty string.

DhcpcdOptions= is currently not documented. The last documentation read:
"Do not use this unless you know what you are doing."
When using this variable, "-L" now has to be added if its functionality is
desired.

The hooks (including any interface hook)  are loaded each time a wpa
event occurs. This means the auto.action script can be extended in the
hooks. For this purpose, several exported variables (mainly $ACTION)
can be checked for their value. The name of the active profile is not
exported, but still available (just as in ordinary netctl usage) through
the $Profile variable.

Profiles ending in .action are disallowed (reserved for possible future
use). Both ifplugd and wpa_actiond have a notion of 'action script'.

Split them into different variables for different clients.
Also, IP6 gets its own, so that it can have options different from the
IP4 invocation.

wpa_supplicant would not immediately terminate with an attached ctrl monitor.

This settles a style for 'case' statements:
The label and closing colons are indented with two spaces,
The body is indented with two more, totalling four spaces.

- The services now bind to their interfaces correctly.
- Documentation of ExcludeAuto is added.

This commit contains the refactoring and rewriting of code.

This commit contains the moving of files.

- Use "-K" to prevent unnecessary remove/re-acquire a lease.
- Respect /etc/network.d/interfaces/$interface and the dhcp options set there when connecting without a matching profile. Also use the same options used in $CONN_DIR/ethernet.

Fixes by Thomas Bächler

Signed-off-by: Rémy Oudompheng <remy@archlinux.org>

wpa_actiond-action: Properly quote arguments of the script, they might contain spaces (especially $profile)

This is implemented almost entirely as suggested by Thomas, and it
depends on autowifi which is his work.

autowifi-netcfg provides proper roaming and automatic wireless though
wpa_supplicant.

To run, use autowifi-netcfg $interface