Beautify configure output
Beautify configure output

Checking for cpp before using it avoids somewhat ugly
nested output. Pointed out in bug 593544.

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