mac: Script for creating a .pkg installer

[g-maxime]

No description provided.

[JeromeMartinez]

For your info, we failed to build a portable version of gtk3 (depends on a lot more of other projects), and we had hard time to build a portable version of gtk2, we were able to build it only on a old machine after several tries and this script downloads a binary of gtkdialog from mediaarea.net servers.
vrecord pkg can be built from any machine when downloading gtkdialog from our server, so updates are easy if you don't need to update gtkdialog. The project gtkdialog seems inactive so it may not be needed.

[privatezero]

Did a quick test of this on my end (on a machine that is not 'clean'). So far have not been able to fully run the script - it appears to be erroring during the xmlstarlet build phase with:

Can't exec "aclocal": No such file or directory at /usr/local/Cellar/autoconf/2.72/share/autoconf/Autom4te/FileUtils.pm line 299. autoreconf: error: aclocal failed with exit status: 2