Uses the HTTPS url for cases where the existing URL has a permanent
redirect. For each domain, at least one fixed derivation URL was
downloaded to test the domain is properly serving downloads.
Also fixes jbake source URL, which was broken.
Release announcement, 2016-01-30:
https://www.sigrok.org/blog/major-sigrok-releases-libsigrok-libsigrokdecode-sigrok-cli-pulseview
I first tried updating the projects in separate commits. But later I
found cyclic dependencies, that would break git bisect, so I ended up
squashing the commits:
* libsigrok: 0.3.0 -> 0.4.0
Enable building libsigrokcxx.so, the C++ bindings for libsigrok, by
adding doxygen, glibmm and python as build deps. This is needed for
Pulseview >= 0.3.0. Also update the firmware (sigrok-firmware-fx2lafw)
while at it.
* libsigrokdecode: 0.3.0 -> 0.4.0
* sigrok-cli: 0.5.0 -> 0.6.0
* pulseview: 0.2.0 -> 0.3.0
New dependency: glibmm (due to libsigrokcxx.pc from libsigrok).
Note that collectd is incompatible with the new libsigrok release, so
I let it use the old one (0.3.0).
