[lldb][test] XFAIL TestGlobalSymbolObjCConflict.c on Windows

Failing with:
```
error: command failed with exit status: 1
executed command: 'c:\buildbot\as-builder-10\lldb-x86-64\build\bin\filecheck.exe' 'C:\buildbot\as-builder-10\lldb-x86-64\llvm-project\lldb\test\Shell\Expr\TestGlobalSymbolObjCConflict.c'
.---command stderr------------
| C:\buildbot\as-builder-10\lldb-x86-64\llvm-project\lldb\test\Shell\Expr\TestGlobalSymbolObjCConflict.c:30:11: error: CHECK: expected string not found in input
| // CHECK: (lldb) p OglobalVar
|           ^
| <stdin>:1:1: note: scanning from here
| (lldb) command source -s 0 'C:/buildbot/as-builder-10/lldb-x86-64/build/tools/lldb\test\Shell\lit-lldb-init-quiet'
| ^
| <stdin>:4:1: note: possible intended match here
| (lldb) target create "C:\\buildbot\\as-builder-10\\lldb-x86-64\\build\\tools\\lldb\\test\\Shell\\Expr\\Output\\TestGlobalSymbolObjCConflict.c.tmp.out"
| ^
|
| Input file: <stdin>
| Check file: C:\buildbot\as-builder-10\lldb-x86-64\llvm-project\lldb\test\Shell\Expr\TestGlobalSymbolObjCConflict.c
|
| -dump-input=help explains the following input dump.
|
| Input was:
| <<<<<<
|             1: (lldb) command source -s 0 'C:/buildbot/as-builder-10/lldb-x86-64/build/tools/lldb\test\Shell\lit-lldb-init-quiet'
| check:30'0     X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
|             2: Executing commands in 'C:\buildbot\as-builder-10\lldb-x86-64\build\tools\lldb\test\Shell\lit-lldb-init-quiet'.
| check:30'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|             3: (lldb) command source -C --silent-run true lit-lldb-init
| check:30'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|             4: (lldb) target create "C:\\buildbot\\as-builder-10\\lldb-x86-64\\build\\tools\\lldb\\test\\Shell\\Expr\\Output\\TestGlobalSymbolObjCConflict.c.tmp.out"
| check:30'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| check:30'1     ?                                                                                                                                                       possible intended match
|             5: Current executable set to 'C:\buildbot\as-builder-10\lldb-x86-64\build\tools\lldb\test\Shell\Expr\Output\TestGlobalSymbolObjCConflict.c.tmp.out' (x86_64).
| check:30'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|             6: (lldb) b 27
| check:30'0     ~~~~~~~~~~~~
| >>>>>>
`-----------------------------
error: command failed with exit status: 1
```

We probably need to use LLD here or something. But I don't have a Windows machine to test this on. So XFAILing for now.

(cherry picked from commit 6382bb5)

Author: Michael137

lldb/test/Shell/Expr/TestGlobalSymbolObjCConflict.c

@@ -1,3 +1,5 @@
+// XFAIL: target-windows
+
 // Tests that LLDB correctly parses global symbols
 // starting with 'O'. On some platforms (e.g., Darwin)
 // C-symbols are prefixed with a '_'. The LLDB Macho-O
@@ -9,7 +11,7 @@
 // RUN: %clang_host -c -g -fno-common %s -o %t.o
 // RUN: %clang_host %t.o -o %t.out
 // RUN: %lldb -b -x %t.out \
-// RUN:       -o "b 27" \
+// RUN:       -o "b 29" \
 // RUN:       -o "run" \
 // RUN:       -o "p OglobalVar" \
 // RUN:       -o "p Oabc" | FileCheck %s