Bulk convert control files. (#19986)

```
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
```

10 files changed, 50 insertions, 0 deletions

diff --git a/versions/x-/x265.json b/versions/x-/x265.json
index 134c3bfc4..bd0e54ac1 100644
--- a/versions/x-/x265.json
+++ b/versions/x-/x265.json
@@ -1,6 +1,11 @@
 {
   "versions": [
     {
+      "git-tree": "3904d5293aad0e38ee7ca93b82182441bb1575ca",
+      "version-string": "3.4",
+      "port-version": 5
+    },
+    {
       "git-tree": "39318069e894d5dd6ff63112fd707c31b13be88b",
       "version-string": "3.4",
       "port-version": 4
diff --git a/versions/x-/xerces-c.json b/versions/x-/xerces-c.json
index 4f04f744d..a2a8d80a0 100644
--- a/versions/x-/xerces-c.json
+++ b/versions/x-/xerces-c.json
@@ -1,6 +1,11 @@
 {
   "versions": [
     {
+      "git-tree": "f14ab8d047187d9621974f90d1981534ae7eb58a",
+      "version-string": "3.2.3",
+      "port-version": 2
+    },
+    {
       "git-tree": "37d7c50f22be9c769e1c37f9bf12238ceb16b095",
       "version-string": "3.2.3-1",
       "port-version": 0
diff --git a/versions/x-/xeus.json b/versions/x-/xeus.json
index bb5815f8e..ddd6614a9 100644
--- a/versions/x-/xeus.json
+++ b/versions/x-/xeus.json
@@ -1,6 +1,11 @@
 {
   "versions": [
     {
+      "git-tree": "2bb5d11153c9982aad5337c44d2f781918e8d991",
+      "version-string": "0.24.3",
+      "port-version": 1
+    },
+    {
       "git-tree": "f35bb72c2cb6dfb85ca82106b31428762f82fc1c",
       "version-string": "0.24.3",
       "port-version": 0
diff --git a/versions/x-/xframe.json b/versions/x-/xframe.json
index 36c864663..05a9a31ea 100644
--- a/versions/x-/xframe.json
+++ b/versions/x-/xframe.json
@@ -1,6 +1,11 @@
 {
   "versions": [
     {
+      "git-tree": "7dc9d49f9de1237cea644f835be6631ba0c76c4a",
+      "version-string": "0.3.0",
+      "port-version": 1
+    },
+    {
       "git-tree": "e46a9d8a02694ec336be6e73997faf69b5422525",
       "version-string": "0.3.0",
       "port-version": 0
diff --git a/versions/x-/xmsh.json b/versions/x-/xmsh.json
index c0a061273..0c12cb213 100644
--- a/versions/x-/xmsh.json
+++ b/versions/x-/xmsh.json
@@ -1,6 +1,11 @@
 {
   "versions": [
     {
+      "git-tree": "f08388b4f7fc367a02fd99bb1cefe9d04fb04f04",
+      "version-string": "0.5.2",
+      "port-version": 2
+    },
+    {
       "git-tree": "c31519998bc1ccf0233cd893b16363e354721db4",
       "version-string": "0.5.2-1",
       "port-version": 0
diff --git a/versions/x-/xproperty.json b/versions/x-/xproperty.json
index 88c2e2b13..0d6ce4d94 100644
--- a/versions/x-/xproperty.json
+++ b/versions/x-/xproperty.json
@@ -1,6 +1,11 @@
 {
   "versions": [
     {
+      "git-tree": "1acf4b775a462fc93484010247364837b2ea8133",
+      "version-string": "0.8.1",
+      "port-version": 1
+    },
+    {
       "git-tree": "da04206a148f3886f504922d68ee7bb6931bfb35",
       "version-string": "0.8.1",
       "port-version": 0
diff --git a/versions/x-/xsimd.json b/versions/x-/xsimd.json
index 6bbca358e..7983abea4 100644
--- a/versions/x-/xsimd.json
+++ b/versions/x-/xsimd.json
@@ -1,6 +1,11 @@
 {
   "versions": [
     {
+      "git-tree": "9809d05e16b0047099b1c43c4d81f5f34efe6a8c",
+      "version-string": "7.4.9",
+      "port-version": 1
+    },
+    {
       "git-tree": "6a90c6aea234c06968da8f6c48ea73ae7d95d28e",
       "version-string": "7.4.9",
       "port-version": 0
diff --git a/versions/x-/xtensor-blas.json b/versions/x-/xtensor-blas.json
index e4318e0e4..84e8e2bb3 100644
--- a/versions/x-/xtensor-blas.json
+++ b/versions/x-/xtensor-blas.json
@@ -1,6 +1,11 @@
 {
   "versions": [
     {
+      "git-tree": "d046baeae79d8ce5a5c535ad3c60fe4e65db7366",
+      "version-string": "0.17.2",
+      "port-version": 1
+    },
+    {
       "git-tree": "be4b0910ad2f14c7560353e570cd97f2c2919247",
       "version-string": "0.17.2",
       "port-version": 0
diff --git a/versions/x-/xtensor-fftw.json b/versions/x-/xtensor-fftw.json
index daff4e651..340a6b427 100644
--- a/versions/x-/xtensor-fftw.json
+++ b/versions/x-/xtensor-fftw.json
@@ -1,6 +1,11 @@
 {
   "versions": [
     {
+      "git-tree": "a83a72b6737956e551fe4ddbaa12564048141cec",
+      "version-string": "2019-11-30",
+      "port-version": 1
+    },
+    {
       "git-tree": "507af996ff26bc000fd73761de24f58be61507bd",
       "version-string": "2019-11-30",
       "port-version": 0
diff --git a/versions/x-/xxhash.json b/versions/x-/xxhash.json
index 6859d02fa..202c4d971 100644
--- a/versions/x-/xxhash.json
+++ b/versions/x-/xxhash.json
@@ -1,6 +1,11 @@
 {
   "versions": [
     {
+      "git-tree": "427341c7e75df558fc7fe5ff69340387877bddf8",
+      "version-string": "0.8.0",
+      "port-version": 2
+    },
+    {
       "git-tree": "b0513b38c64783f4c9fe001b995f62a10f2e6d8c",
       "version-string": "0.8.0",
       "port-version": 1