```
function Convert-Control {
    Param($full)
    .\vcpkg.exe format-manifest $full
    $root = $full.Substring(0, $full.Length - 7) # CONTROL
    $new = $root + 'vcpkg.json'
    $content = Get-Content -Raw $new
    $asJson = ConvertFrom-Json $content -AsHashtable -Depth 100
    $oldVersion = $asJson['port-version']
    if ($null -eq $oldVersion) {
        $oldVersionFull = $asJson['version-string']
        Write-Host "Got version $oldVersionFull"
        $match = [System.Text.RegularExpressions.Regex]::Match($oldVersionFull, '^(.+)-(\d+)$')
        if ($match.Success -and -not [System.Text.RegularExpressions.Regex]::IsMatch($oldVersionFull, '^\d\d\d\d-\d\d-\d\d$')) {
            $newFullVersion = [string]$match.Groups[1].Value
            $oldVersion = [int]$match.Groups[2].Value
            Write-Host "newFullVersion $newFullVersion oldVersion $oldVersion"
            $newVersion = $oldVersion + 1
            $asJson['version-string'] = $newFullVersion
            Write-Host "Previous version for $full extracted from version field -- setting version-string $newFullVersion and port-version $newVersion"
        } else {
            Write-Host "No previous version for $full -- setting 1"
            $newVersion = 1
        }
    } else {
        $newVersion = [int]$oldVersion + 1
        Write-Host "New version for $full : $newVersion"
    }

    $asJson['port-version'] = $newVersion

    $content = ConvertTo-Json $asJson -Depth 100
    Set-Content -Path $new -Value $content
    .\vcpkg.exe format-manifest $new
}

Get-ChildItem ports\CONTROL -Recurse | Foreach-Object {
    Convert-Control $_.FullName
}

git commit -am "this message"
.\vcpkg.exe x-add-version -all
git commit -a --amend
```

* [freeimage libraw] fix build issue on linux

* Update the changes

vcpkg will now fail on failure to apply patches except when using `--head`.

* [vcpkg] Add "Homepage" field to the CONTROL files.

Update from the latest release 0.19 to use the latest snapshot
LibRaw-201903 (SHA-1:d4f05dd1b9b2d44c8f7e82043cbad3c724db2416).

The rationale is that LibRaw publishes:
- snapshots every 5-7 months (in master branch)
- releases (0.18, 0.19, etc.) every 1-1.5 years.
- security hotfixes for releases (0.19.1, 0.19.2, etc.)
Hence, from user point of view, it is practical to refer to
the latest snapshot, instead of the latest release.

Another issue is that the latest release 0.19 does not include
support for C++17 (does not allow to replace std::auto_ptr with
std::unique_ptr). The latest LibRaw-201903 includes related fixes.