Fix the PortableApps package name.

Remove Installer.nsi while we're here.

Change-Id: I739d5d825fd76eac9b50d26fab2d44e853dc83f9
Reviewed-on: https://code.wireshark.org/review/3965
Reviewed-by: Gerald Combs <gerald@wireshark.org>
OS X packaging fix.

Change-Id: I82936bb1dcfa3a7ca1aea8a3ded388015aa37531
Reviewed-on: https://code.wireshark.org/review/3966
Reviewed-by: Gerald Combs <gerald@wireshark.org>