[lld][ELF] Support LLVM repository and LLVM revision information (#97323)

Added LLVM repository and LLVM revision information for
`lld::getLLDVersion()`

Before this change:
```
hongyuchy@hongyuchy:~/llvm-project/.build_lld_version$ bin/ld.lld --version
LLD 19.0.0 (compatible with GNU linkers) 
```

After this change with LLVM_APPEND_VC_REV=on
```
hongyuchy@hongyuchy:~/llvm-project/.build_lld_version$ bin/ld.lld --version
LLD 19.0.0 (https://github.com/yugier/llvm-project.git 4134b33), compatible with GNU linkers
```

with LLVM_APPEND_VC_REV=off
```
hongyuchy@hongyuchy:~/llvm-project/.build_lld_version$ bin/ld.lld --version
LLD 19.0.0, compatible with GNU linkers
```

Author: hongyu-dev

lld/Common/Version.cpp

@@ -11,8 +11,8 @@
 //===----------------------------------------------------------------------===//
 
 #include "lld/Common/Version.h"
-
 #include "VCSVersion.inc"
+#include "llvm/Support/VCSRevision.h"
 
 // Returns a version string, e.g.:
 // LLD 14.0.0 (https://github.com/llvm/llvm-project.git
@@ -23,6 +23,11 @@ std::string lld::getLLDVersion() {
 #else
 #define LLD_VENDOR_DISPLAY
 #endif
+#if defined(LLVM_REPOSITORY) || defined(LLVM_REVISION)
+  return LLD_VENDOR_DISPLAY "LLD " LLD_VERSION_STRING " (" LLVM_REPOSITORY
+                            " " LLVM_REVISION ")";
+#else
   return LLD_VENDOR_DISPLAY "LLD " LLD_VERSION_STRING;
+#endif
 #undef LLD_VENDOR_DISPLAY
 }

lld/ELF/Driver.cpp

@@ -631,7 +631,7 @@ void LinkerDriver::linkerMain(ArrayRef<const char *> argsArr) {
   // of Libtool. We cannot convince every software developer to migrate to
   // the latest version and re-generate scripts. So we have this hack.
   if (args.hasArg(OPT_v) || args.hasArg(OPT_version))
-    message(getLLDVersion() + " (compatible with GNU linkers)");
+    message(getLLDVersion() + ", compatible with GNU linkers");
 
   if (const char *path = getReproduceOption(args)) {
     // Note that --reproduce is a debug option so you can ignore it

lld/MinGW/Driver.cpp

@@ -199,7 +199,7 @@ bool link(ArrayRef<const char *> argsArr, llvm::raw_ostream &stdoutOS,
   // a GNU compatible linker. As long as an output for the -v option
   // contains "GNU" or "with BFD", they recognize us as GNU-compatible.
   if (args.hasArg(OPT_v) || args.hasArg(OPT_version))
-    message(getLLDVersion() + " (compatible with GNU linkers)");
+    message(getLLDVersion() + ", compatible with GNU linkers");
 
   // The behavior of -v or --version is a bit strange, but this is
   // needed for compatibility with GNU linkers.

lld/test/ELF/version.test

@@ -7,4 +7,4 @@
 # RUN: ld.lld -V 2>&1 | FileCheck %s
 # RUN: not ld.lld -V %t/not-exist 2>&1 | FileCheck %s
 
-# CHECK: LLD {{.*}} (compatible with GNU linkers)
+# CHECK: LLD {{.*}}, compatible with GNU linkers

lld/test/MinGW/driver.test

@@ -268,7 +268,7 @@ APPCONTAINER: -appcontainer
 RUN: ld.lld -m i386pep --version 2>&1 | FileCheck -check-prefix=VERSION %s
 RUN: ld.lld -m i386pep -v 2>&1 | FileCheck -check-prefix=VERSION %s
 RUN: not ld.lld -m i386pep -v xyz 2>&1 | FileCheck -check-prefix=VERSION %s
-VERSION: LLD {{.*}} (compatible with GNU linkers)
+VERSION: LLD {{.*}}, compatible with GNU linkers
 
 RUN: ld.lld -m i386pep --help 2>&1 | FileCheck -check-prefix=HELP %s
 HELP: USAGE: