GDataList: don't hold the bitlock over callbacks
GDataList: don't hold the bitlock over callbacks

g_datalist_id_clear_i was dropping the dataset lock around
the destroy notifies, but kept the bitlock. This was causing
deadlocks when finalizing widgets.

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