Bump _WIN32_WINNT to 0x0501
Bump _WIN32_WINNT to 0x0501

Needed to get prototypes for getaddrinfo() and friends on mingw.

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