Add get latest script which also calls build

ue4-get-latest.ps1

@@ -0,0 +1,86 @@
+[CmdletBinding()] # Fail on unknown args
+param (
+    [string]$src,
+    [switch]$nocloseeditor = $false,
+    [switch]$dryrun = $false,
+    [switch]$help = $false
+)
+
+function Print-Usage {
+    Write-Output "Steve's UE4 Get Latest Tool"
+    Write-Output "   Get latest from repo and build for dev. Will close UE4 editor!"
+    Write-Output "Usage:"
+    Write-Output "  ue4-get-latest.ps1 [[-src:]sourcefolder] [Options]"
+    Write-Output " "
+    Write-Output "  -src         : Source folder (current folder if omitted)"
+    Write-Output "               : (should be root of project)"
+    Write-Output "  -nocloseeditor : Don't close UE4 editor (this will prevent DLL cleanup)"
+    Write-Output "  -dryrun      : Don't perform any actual actions, just report on what you would do"
+    Write-Output "  -help        : Print this help"
+    Write-Output " "
+    Write-Output "Environment Variables:"
+    Write-Output "  UE4INSTALL   : Use a specific UE4 install."
+    Write-Output "               : Default is to find one based on project version, under UE4ROOT"
+    Write-Output "  UE4ROOT      : Parent folder of all binary UE4 installs (detects version). "
+    Write-Output "               : Default C:\Program Files\Epic Games"
+    Write-Output " "
+
+}
+
+$ErrorActionPreference = "Stop"
+
+if ($help) {
+    Print-Usage
+    Exit 0
+}
+
+$result = 0
+
+try {
+    if ($src -ne ".") { Push-Location $src }
+
+    # Make sure we're running in the root of the project
+    $uprojfile = Get-ChildItem *.uproject | Select-Object -expand Name
+    if (-not $uprojfile) {
+        throw "No Unreal project file found in $(Get-Location)! Aborting."
+    }
+    if ($uprojfile -is [array]) {
+        throw "Multiple Unreal project files found in $(Get-Location)! Aborting."
+    }
+
+    # Hard coded for Subversion right now
+    if ($dryrun) {
+        Write-Output "Checking for updates we WOULD do:"
+        svn status --show-updates
+    } else {
+        Write-Output "Updating to latest..."
+        svn up
+    }
+
+    if ($LASTEXITCODE -ne 0) {
+        throw "Subversion update failed, see above"
+    }
+
+    # Now build
+    $args = @()
+    if ($nocloseeditor) {
+        $args += "-nocloseeditor"
+    }
+    if ($dryrun) {
+        $args += "-dryrun"
+    }
+    # Use Invoke-Expression so we can use a string as options
+    Invoke-Expression "&'$PSScriptRoot/ue4-build.ps1' dev $args"
+
+    Write-Output "-- Get Latest finished OK --"
+
+
+} catch {
+    Write-Output "ERROR: $($_.Exception.Message)"
+    $result = 9
+} finally {
+    if ($src -ne ".") { Pop-Location }
+}
+
+Exit $result
+