Fix G*_TO_POINTER casts on 32 bits
Fix G*_TO_POINTER casts on 32 bits

If we don't do the cast to the proper size in 32 bits, things like below
doesn't work:

uint8_t u = 20;
void *p;

p = GUINT_TO_POINTER(u);

Signed-off-by: Colin Walters <walters@verbum.org>

https://bugzilla.gnome.org/show_bug.cgi?id=661546

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