allow to install docs since this is a dev environment
rebuild and bump from fedora 20 to fedora 21

Note: git-remote-hg obsoletes git-hg as of
https://bugzilla.redhat.com/show_bug.cgi?id=1170008
and resolves failure to install git-hg:

    Error: Package: git-hg-2.1.0-2.fc21.noarch (fedora)
    Requires: git = 2.1.0-2.fc21
    Available: git-2.1.0-2.fc21.x86_64 (fedora)
               git = 2.1.0-2.fc21
    Installing: git-2.1.0-4.fc21.x86_64 (updates)
               git = 2.1.0-4.fc21

See also https://admin.fedoraproject.org/updates/git-2.1.0-4.fc21
bump eiffelstudio version
BZ1176361: do not run functional test against ldc2

Add test.sh script to misc/ directory to demonstrate breakage.
Output of test.sh:

===================
SUMMARY for Sat Dec 20 21:59:21 UTC 2014
-------------------
Fedora 20 (Heisenbug) branch master FAILED to compile
Fedora 20 (Heisenbug) branch heads/0.4 compiles OK and runs OK
Fedora 21 (Twenty One) branch master compiles OK but FAILS to run
Fedora 21 (Twenty One) branch heads/0.4 compiles OK but FAILS to run
Ubuntu 14.04.1 LTS, Trusty Tahr branch master compiles OK and runs OK
Ubuntu 14.04.1 LTS, Trusty Tahr branch heads/0.4 compiles OK and runs OK