cross-x86_64-w64-mingw32: update to gcc-8.3.0.

[ci skip]

srcpkgs/cross-x86_64-w64-mingw32/template

@@ -1,5 +1,5 @@
 _binutils_version=2.29.1
-_gcc_version=8.2.0
+_gcc_version=8.3.0
 _gmp_version=6.1.2
 _mpfr_version=4.0.1
 _mpc_version=1.1.0
@@ -8,7 +8,7 @@ _mingw_version=5.0.4
 
 pkgname=cross-x86_64-w64-mingw32
 version=${_mingw_version}
-revision=4
+revision=5
 short_desc="Cross toolchain for Win64 (GCC ${_gcc_version})"
 maintainer="Aleksey Tulinov <aleksey.tulinov@gmail.com>"
 homepage="https://sourceforge.net/projects/mingw-w64/"
@@ -24,14 +24,14 @@ distfiles="
  ${SOURCEFORGE_SITE}/project/mingw-w64/mingw-w64/mingw-w64-release/mingw-w64-v${_mingw_version}.tar.bz2"
 checksum="
  1509dff41369fb70aed23682351b663b56db894034773e6dbf7d5d6071fc55cc
- 196c3c04ba2613f893283977e6011b2345d1cd1af9abeac58e916b1aab3e0080
+ 64baadfe6cc0f4947a84cb12d7f0dfaf45bb58b7e92461639596c21e02d97d2c
  6985c538143c1208dcb1ac42cedad6ff52e267b47e5f970183a3e75125b43c2e
  87b565e89a9a684fe4ebeeddb8399dce2599f9c9049854ca8c0dfbdea0e21912
  67874a60826303ee2fb6affc6dc0ddd3e749e9bfcb4c8655e3953d0458a6e16e
  d59726f34f7852a081fbd3defd1ab2136f174110fc2e0c8d10bb122173fa9ed8
  5527e1f6496841e2bb72f97a184fc79affdcd37972eaa9ebf7a5fd05c31ff803"
 
-only_for_archs="i686 x86_64"
+archs="i686 x86_64"
 create_wrksrc=yes
 hostmakedepends="perl flex"
 makedepends="zlib-devel"