Make cancellable pipe fds close-on-exec
Make cancellable pipe fds close-on-exec

GCancellable is purely an in-process thing, so ensure that no cancellable
fds accidentally leak to child processes.

johne53/MB3Glib,zsx/glib,OpenInkpot-archive/iplinux-glib2.0,pstglia/external-bluetooth-glib,Distrotech/glib,krichter722/glib,OpenInkpot-archive/iplinux-glib2.0,mzabaluev/glib,iConsole/Console-OS_external_bluetooth_glib,antono/glib,OpenInkpot-archive/iplinux-glib2.0,endlessm/glib,cosimoc/glib,lukasz-skalski/glib,pstglia/platform-external-bluetooth-glib,MathieuDuponchelle/glib,iConsole/Console-OS_external_bluetooth_glib,cosimoc/glib,ahmedammar/platform_external_gst_glib,iConsole/Console-OS_external_bluetooth_glib,zsx/glib,cention-sany/glib,lukasz-skalski/glib,krichter722/glib,dicer/android_external_glib,johne53/MB3Glib,iConsole/Console-OS_external_bluetooth_glib,darren-clark/android_platform_external_bluetooth_glib,dicer/android_external_glib,krichter722/glib,antono/glib,tchakabam/glib,endlessm/glib,endlessm/glib,djdeath/glib,johne53/MB3Glib,bluez-android/glib,tamaskenez/glib,cention-sany/glib,tchakabam/glib,justinkb/aosp-bluez.glib,gale320/glib,MathieuDuponchelle/glib,ieei/glib,bratsche/glib,ieei/glib,dicer/android_external_glib,mzabaluev/glib,OpenInkpot-archive/iplinux-glib2.0,tamaskenez/glib,bratsche/glib,johne53/MB3Glib,OpenInkpot-archive/iplinux-glib2.0,ahmedammar/platform_external_gst_glib,djdeath/glib,bluez-android/glib,pstglia/platform-external-bluetooth-glib,tchakabam/glib,zsx/glib,zsx/glib,Distrotech/glib,darren-clark/android_platform_external_bluetooth_glib,gale320/glib,pstglia/external-bluetooth-glib,tamaskenez/glib,Distrotech/glib,pstglia/platform-external-bluetooth-glib,MathieuDuponchelle/glib,bratsche/glib,ieei/glib-old-android,darren-clark/android_platform_external_bluetooth_glib,djdeath/glib,tchakabam/glib,darren-clark/android_platform_external_bluetooth_glib,pstglia/external-bluetooth-glib,mzabaluev/glib,lukasz-skalski/glib,cention-sany/glib,tamaskenez/glib,dicer/android_external_glib,01org/android-bluez-glib,tchakabam/glib,gale320/glib,cention-sany/glib,krichter722/glib,darren-clark/android_platform_external_bluetooth_glib,bratsche/glib,cention-sany/glib,antono/glib,bluez-android/glib,Distrotech/glib,endlessm/glib,djdeath/glib,endlessm/glib,justinkb/aosp-bluez.glib,ahmedammar/platform_external_gst_glib,justinkb/aosp-bluez.glib,bluez-android/glib,pstglia/platform-external-bluetooth-glib,antono/glib,ieei/glib,iConsole/Console-OS_external_bluetooth_glib,01org/android-bluez-glib,pstglia/external-bluetooth-glib,lukasz-skalski/glib,bluez-android/glib,ieei/glib-old-android,djdeath/glib,pstglia/platform-external-bluetooth-glib,mzabaluev/glib,justinkb/aosp-bluez.glib,johne53/MB3Glib,01org/android-bluez-glib,Distrotech/glib,MathieuDuponchelle/glib,ieei/glib,krichter722/glib,cosimoc/glib,01org/android-bluez-glib,ieei/glib-old-android,tamaskenez/glib,cosimoc/glib,01org/android-bluez-glib,MathieuDuponchelle/glib,pstglia/external-bluetooth-glib,justinkb/aosp-bluez.glib,dicer/android_external_glib,gale320/glib,ahmedammar/platform_external_gst_glib,johne53/MB3Glib,cosimoc/glib,lukasz-skalski/glib,gale320/glib,ieei/glib-old-android,mzabaluev/glib,ieei/glib