glib-genmarshal.c: Use G_VA_COPY instead of va_copy()
glib-genmarshal.c: Use G_VA_COPY instead of va_copy()

In the code generation portion, va_copy() is not universally available,
so use the existing G_VA_COPY macro that in turn calls va_copy() if it
is available or call an appropriate emulation otherwise.

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