Jetbrains seems to have deviated from the usual URL pattern of
`/<product>/<version>/<name>-<version>.<ext>` by only using the major.minor part
of the version number in the first URL segment for MPS.
clion: 2020.2.1 -> 2021.1.2
datagrip: 2020.2.2 -> 2021.1.2
goland: 2020.2.2 -> 2021.1.2
idea-community: 2020.2.1 -> 2021.1.2
idea-ultimate: 2020.2.1 -> 2021.1.2
mps: 2020.1.4 -> 2021.1
phpstorm: 2020.2.1 -> 2021.1.3
pycharm-community: 2020.2.1 -> 2021.1.2
pycharm-professional: 2020.2.1 -> 2021.1.2
rider: 2020.2.1 -> 2021.1.3
ruby-mine: 2020.2.1 -> 2021.1.2
webstorm: 2020.2.1 -> 2021.1.2
These updates have all been generated with the newly fixed update.pl
script.
The script update.pl, which gets the latest versions from upstream
web server, has been failing for roughly half a year. It failed to
handle the new url pattern of MPS. The script and the url pattern
is updated to work with the latest version.
The clion specific postFixup hook had to be adapted, because names
of shared libraries changed.
(cherry picked from commit 8593496928ebacc8d0779ff5706b8d511dbc0177)
