fix batCall

ci/ci.psm1

@@ -2,9 +2,11 @@
 #http://stackoverflow.com/questions/2124753/how-i-can-use-powershell-with-the-visual-studio-command-prompt
 function batCall([string] $path, [string] $arg)
 {
-cmd /c "$(path)&set" |
+Write-Host "Calling $path $arg"
+cmd /c "$path $arg & set" |
 foreach {
   if ($_ -match "=") {
+    #Write-Host "ENV:\$($v[0])=$($v[1])"
     $v = $_.split("="); set-item -force -path "ENV:\$($v[0])"  -value "$($v[1])"
   }
 }

ci/msvc.ps1

@@ -1,4 +1,4 @@
-Import-Module $env:APPVEYOR_BUILD_FOLDER\ci\ci.psm1
+Import-Module $env:APPVEYOR_BUILD_FOLDER\ci\ci.psm1 -Force
 
 batCall "C:\Qt\5.5\msvc2013_64\bin\qtenv2.bat"
 batCall "C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\vcvarsall.bat" amd64