security/wpa_supplicant: Update to version 2.6 and patch for LibreSSL support

[jrm]

Summary

security/wpa_supplicant: Update to version 2.6 and patch for LibreSSL support

This is a first attempt to get version 2.6 working. More work needs to be done
before it could be committed, but it's at a point where it compiles, except
under two conditions described below. After some testing, it seems to generally
function properly, but there is a strange interaction with the rc scripts.
Putting wpa_supplicant_program="/usr/local/sbin/wpa_supplicant" in /etc/rc.conf
and starting networking without specifying wlan0 (# service netif start) works
fine, but specifying wlan0 (# service netif start wlan0) causes wpa_supplicant
to use 100% CPU and it can only be stopped by killing the process.

Changes to the port:

• Remove patches that have been incorporated upstream
• Add patches for LibreSSL support

Test Plan

porlint:
portlint not like how the options are handled: Warnings: OPT is listed in
OPTIONS_DEFINE, but no PORT_OPTIONS:OPT appears. Otherwise fine.

testport: OK (poudriere: 9.3-RELEASE-p48, i386, default options)
testport: OK (poudriere: 9.3-RELEASE-p48, amd64, default options)
testport: OK (poudriere: 10.3-RELEASE-p10, i386, default options)
testport: OK (poudriere: 10.3-RELEASE-p10, amd64, default options)
testport: OK (poudriere: 11.0-RELEASE-p1, i386, default options)
testport: OK (poudriere: 11.0-RELEASE-p1, amd64, default options)

Two option combinations cause build errors on all the releases listed above.

Build failure when NDIS and PRIVSEP are both on:

...
CC  wpa_priv.c
sed dbus/fi.w1.wpa_supplicant1.service.in
../src/drivers/driver_ndis.o: In function `wpa_driver_ndis_get_scan_results':
../src/drivers/driver_ndis.c:(.text+0x2847): undefined reference to `get_ie'

Build failure when are both on IEEE80211AC and IEEE80211N are on:

...
CC  ctrl_iface.c
../src/ap/ieee802_11_vht.o: In function `hostapd_eid_txpower_envelope':
../src/ap/ieee802_11_vht.c:(.text+0x2ef): undefined reference to `hostapd_is_dfs_required'
cc: error: linker command failed with exit code 1 (use -v to see invocation)

[jrm]

Update the diff after revision 425896 incorporated some of the same Makefile
changes without the version bump.

[AMDmi3]

I'm in no position to deeply review patch changes, but the update looks good.

[jrm]

The strange interaction with the rc scripts is not related to the port itself and is not different than the last version of security/wpa_supplicant.

For the two compile errors, I could either use _PREVENTS or add

.if ${PORT_OPTIONS:MNDIS} && ${PORT_OPTIONS:MPRIVSEP}
BROKEN= Fails to compile with both NDIS and PRIVSEP
.endif

.if ${PORT_OPTIONS:MIEEE80211AC} && ${PORT_OPTIONS:MIEEE80211N}
BROKEN= Fails to compile with both IEEE80211AC and IEEE80211N
.endif

[AMDmi3]

I'd prefer BROKENs. It's more explicit and doesn't violate POLA