GHash: use macros to check for magic hash values.
GHash: use macros to check for magic hash values.

https://bugzilla.gnome.org/show_bug.cgi?id=644437

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