gdbus-codegen: post-process all interfaces when parsing >1 file
gdbus-codegen: post-process all interfaces when parsing >1 file

This also fixes a crash when you run gdbus-codegen with no arguments.

https://bugzilla.gnome.org/show_bug.cgi?id=656323

Signed-off-by: David Zeuthen <16a4bae6a7afea1fdd75baca6404fe68f285db96@redhat.com>

antono/glib,lukasz-skalski/glib,djdeath/glib,krichter722/glib,tchakabam/glib,cention-sany/glib,Distrotech/glib,djdeath/glib,iConsole/Console-OS_external_bluetooth_glib,endlessm/glib,darren-clark/android_platform_external_bluetooth_glib,MathieuDuponchelle/glib,cosimoc/glib,gale320/glib,endlessm/glib,antono/glib,01org/android-bluez-glib,justinkb/aosp-bluez.glib,cention-sany/glib,pstglia/external-bluetooth-glib,gale320/glib,iConsole/Console-OS_external_bluetooth_glib,bluez-android/glib,tamaskenez/glib,lukasz-skalski/glib,mzabaluev/glib,endlessm/glib,pstglia/platform-external-bluetooth-glib,tchakabam/glib,mzabaluev/glib,pstglia/platform-external-bluetooth-glib,mzabaluev/glib,cention-sany/glib,gale320/glib,01org/android-bluez-glib,lukasz-skalski/glib,pstglia/platform-external-bluetooth-glib,antono/glib,tamaskenez/glib,pstglia/platform-external-bluetooth-glib,johne53/MB3Glib,01org/android-bluez-glib,iConsole/Console-OS_external_bluetooth_glib,lukasz-skalski/glib,bluez-android/glib,darren-clark/android_platform_external_bluetooth_glib,Distrotech/glib,justinkb/aosp-bluez.glib,darren-clark/android_platform_external_bluetooth_glib,tamaskenez/glib,Distrotech/glib,johne53/MB3Glib,tamaskenez/glib,MathieuDuponchelle/glib,justinkb/aosp-bluez.glib,johne53/MB3Glib,cosimoc/glib,pstglia/external-bluetooth-glib,antono/glib,johne53/MB3Glib,Distrotech/glib,pstglia/platform-external-bluetooth-glib,iConsole/Console-OS_external_bluetooth_glib,cention-sany/glib,MathieuDuponchelle/glib,cosimoc/glib,gale320/glib,tchakabam/glib,ieei/glib,mzabaluev/glib,johne53/MB3Glib,mzabaluev/glib,gale320/glib,darren-clark/android_platform_external_bluetooth_glib,krichter722/glib,djdeath/glib,MathieuDuponchelle/glib,johne53/MB3Glib,djdeath/glib,ieei/glib,lukasz-skalski/glib,bluez-android/glib,krichter722/glib,bluez-android/glib,01org/android-bluez-glib,ieei/glib,endlessm/glib,justinkb/aosp-bluez.glib,pstglia/external-bluetooth-glib,krichter722/glib,darren-clark/android_platform_external_bluetooth_glib,justinkb/aosp-bluez.glib,MathieuDuponchelle/glib,cention-sany/glib,bluez-android/glib,cosimoc/glib,ieei/glib,iConsole/Console-OS_external_bluetooth_glib,djdeath/glib,pstglia/external-bluetooth-glib,krichter722/glib,Distrotech/glib,tamaskenez/glib,tchakabam/glib,pstglia/external-bluetooth-glib,endlessm/glib,tchakabam/glib,ieei/glib,01org/android-bluez-glib,cosimoc/glib