Add support of the next Ubuntu (Ubuntu 22.04 - Jammy Jellyfish)

It is going to be a LTS release

Author: sylvestre

clang/include/clang/Driver/Distro.h

@@ -73,6 +73,7 @@ class Distro {
     UbuntuGroovy,
     UbuntuHirsute,
     UbuntuImpish,
+    UbuntuJammy,
     UnknownDistro
   };
 
@@ -124,7 +125,7 @@ class Distro {
   }
 
   bool IsUbuntu() const {
-    return DistroVal >= UbuntuHardy && DistroVal <= UbuntuImpish;
+    return DistroVal >= UbuntuHardy && DistroVal <= UbuntuJammy;
   }
 
   bool IsAlpineLinux() const { return DistroVal == AlpineLinux; }

clang/lib/Driver/Distro.cpp

@@ -90,6 +90,7 @@ static Distro::DistroType DetectLsbRelease(llvm::vfs::FileSystem &VFS) {
                     .Case("groovy", Distro::UbuntuGroovy)
                     .Case("hirsute", Distro::UbuntuHirsute)
                     .Case("impish", Distro::UbuntuImpish)
+                    .Case("jammy", Distro::UbuntuJammy)
                     .Default(Distro::UnknownDistro);
   return Version;
 }