libgphoto2: needs libltdl, not just libtool

Fixes #20935.
Hardware::CPU (Mac): add Haswell

See #20935.
Add Haswell to CPU tests

These tests need a lot of work...
ssh-copy-id 6.2p2

Closes #20942.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
gssdp 0.14.3

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
gupnp 0.20.3

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
upnp-router-control 0.2

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Monotone: use Boost 1.49

Closes #19851.
ninja: add URL for HEAD version

Closes #20928.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
CLT is just CLT now; not "for Xcode".

References #17383.