Some minor updates of building.sgml
Some minor updates of building.sgml

https://bugzilla.gnome.org/show_bug.cgi?id=664830

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