Update release script for gyp.
Merge branch 'release-script' into develop
Create release branch for 0.7.2.
Update releasing docs.
Fix Info.plist generation.

I expected Info.plist preprocessing to do the regular "${VAR}"
substitution, but apparently it invokes the C preprocessor and var
substitution happens as part of the copy_plist phase.

Disable preprocessing and put the expected vars into regular Xcode
variables.
Integrate libmodplug-gyp.

Silences a bunch of build warnings.
Release Antares 0.7.2.
Merge branch 'release/0.7.2' into develop
Compress zip distfile.

The default in python's zipfile is to store files but not compress them.
That wastes a lot of space, since most of the distfile is source code,
which compresses well.
Merge branch 'zip' into develop