libraw: update 0.15.4 bottle.
librem: update 0.4.6 bottle.
libresample: update 0.1.3 bottle.
libressl: update 2.1.1 bottle.
librtlsdr: update 0.5.3 bottle.
libscrypt: update 1.19 bottle.
libsecret: update 0.18 bottle.
libsmf: update 1.3 bottle.
libsmi: update 0.4.8 bottle.
libspiro: update 20071029 bottle.
libstxxl: update 1.4.0 bottle.
libsvm: update 3.18 bottle.
libswiften: update 2.0 bottle.
libtar: update 1.2.20 bottle.
add audit check for system OpenSSL linkage
strongswan 5.2.1
strongswan: update 5.2.1 bottle.

Closes #33389.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
libwbxml: update 0.11.2 bottle.
doctor: Xcode 6.1 is in the App Store

Closes #33397.

Signed-off-by: Misty De Meo <mistydemeo@gmail.com>
Drop questionable CLT advice

If an outdated Xcode is installed, it really needs to be updated if
possible. Otherwise things that depend on Xcode at build time will have
that dependency satisfied, but will fail to compile. The CLT is enough
if it is installed by itself, in which case Xcode dependencies will not
be satisfied.