Drone CI: Share same build script with Appveyor.

.drone.yml

@@ -3,7 +3,7 @@ build:
   shell: msys32
   commands:
     - export RUNTEST=$$runtest
-    - drone/build.sh
+    - ./ci-build.sh
 
 notify:
   irc:

drone/build.sh

@@ -1,24 +0,0 @@
-#!/bin/bash
-
-set -e
-
-git config --global user.email "ci@msys2.org"
-git config --global user.name "MSYS2 Build Bot"
-
-# fetch first changed PKGBUILD file, assume at most one package touched per commit
-# if you want to have your changes tested by ci then bump the pkgrel in PKGBUILD
-TOUCHED=`git show -m --pretty="format:" --name-only | grep PKGBUILD | head -1`
-if [ "$TOUCHED" ]
-then
-    PKGDIR=`dirname $TOUCHED`
-    pushd $PKGDIR > /dev/null
-    if [ "$RUNTEST" = "true" ]
-    then
-        makepkg-mingw -f -s --noconfirm --skippgpcheck || true
-    else
-        makepkg-mingw -f -s --noconfirm --skippgpcheck --nocheck
-    fi
-    popd > /dev/null
-else
-    echo Nothing to test
-fi