[Telepathy] telepathy-mission-control 5.7.9

[Vivek Dasmohapatra]

Ok, the last release passsed distcheck with a -Werror failure
somewhow, so:

• This one should actually build with -Werror
• This one _is_ actually 5.7.9

Many apologies for the inconvenience.

The “From Hell's Heart I Stab at const” release.

tarball: http://telepathy.freedesktop.org/releases/telepathy-mission-control/telepathy-mission-control-5.7.9.tar.gz
signature: http://telepathy.freedesktop.org/releases/telepathy-mission-control/telepathy-mission-control-5.7.9.tar.gz.asc

Fixes:

• Build failure due to warning/error promotion (fledermaus)