[libc] fix up the use of angle includes in include/ (#86027)

Performed en-masse via:

    $ grep -rn "#include <ll" libc/include -l | \
      xargs perl -pi -e 's/#include <ll(.*)>/#include "ll$1"/'
    $ grep -rn "#include <__" libc/include -l | \
      xargs perl -pi -e 's/#include <__(.*)>/#include "__$1"/'

Link: #83463
Link: #83210

Author: nickdesaulniers

libc/include/arpa/inet.h.def

@@ -9,7 +9,7 @@
 #ifndef LLVM_LIBC_ARPA_INET_H
 #define LLVM_LIBC_ARPA_INET_H
 
-#include <__llvm-libc-common.h>
+#include "__llvm-libc-common.h"
 
 #include <inttypes.h>
 

libc/include/assert.h.def

@@ -6,7 +6,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include <__llvm-libc-common.h>
+#include "__llvm-libc-common.h"
 
 // This file may be usefully included multiple times to change assert()'s
 // definition based on NDEBUG.

libc/include/ctype.h.def

@@ -9,7 +9,7 @@
 #ifndef LLVM_LIBC_CTYPE_H
 #define LLVM_LIBC_CTYPE_H
 
-#include <__llvm-libc-common.h>
+#include "__llvm-libc-common.h"
 
 %%public_api()
 

libc/include/dirent.h.def

@@ -9,7 +9,7 @@
 #ifndef LLVM_LIBC_DIRENT_H
 #define LLVM_LIBC_DIRENT_H
 
-#include <__llvm-libc-common.h>
+#include "__llvm-libc-common.h"
 
 %%public_api()
 

libc/include/errno.h.def

@@ -9,7 +9,7 @@
 #ifndef LLVM_LIBC_ERRNO_H
 #define LLVM_LIBC_ERRNO_H
 
-#include <__llvm-libc-common.h>
+#include "__llvm-libc-common.h"
 
 #ifdef __linux__
 
@@ -40,7 +40,7 @@
 #endif // ENOTRECOVERABLE
 
 #else // __linux__
-#include <llvm-libc-macros/generic-error-number-macros.h>
+#include "llvm-libc-macros/generic-error-number-macros.h"
 #endif
 
 #if !defined(__AMDGPU__) && !defined(__NVPTX__)

libc/include/fcntl.h.def

@@ -9,8 +9,8 @@
 #ifndef LLVM_LIBC_FCNTL_H
 #define LLVM_LIBC_FCNTL_H
 
-#include <__llvm-libc-common.h>
-#include <llvm-libc-macros/fcntl-macros.h>
+#include "__llvm-libc-common.h"
+#include "llvm-libc-macros/fcntl-macros.h"
 
 %%public_api()
 

libc/include/features.h.def

@@ -9,8 +9,8 @@
 #ifndef LLVM_LIBC_FEATURES_H
 #define LLVM_LIBC_FEATURES_H
 
-#include <__llvm-libc-common.h>
-#include <llvm-libc-macros/features-macros.h>
+#include "__llvm-libc-common.h"
+#include "llvm-libc-macros/features-macros.h"
 
 %%public_api()
 

libc/include/fenv.h.def

@@ -9,8 +9,8 @@
 #ifndef LLVM_LIBC_FENV_H
 #define LLVM_LIBC_FENV_H
 
-#include <__llvm-libc-common.h>
-#include <llvm-libc-macros/fenv-macros.h>
+#include "__llvm-libc-common.h"
+#include "llvm-libc-macros/fenv-macros.h"
 
 %%public_api()
 

libc/include/float.h.def

@@ -9,6 +9,6 @@
 #ifndef LLVM_LIBC_FLOAT_H
 #define LLVM_LIBC_FLOAT_H
 
-#include <llvm-libc-macros/float-macros.h>
+#include "llvm-libc-macros/float-macros.h"
 
 #endif // LLVM_LIBC_FLOAT_H

libc/include/gpu/rpc.h.def

@@ -9,9 +9,9 @@
 #ifndef LLVM_LIBC_GPU_RPC_H
 #define LLVM_LIBC_GPU_RPC_H
 
-#include <__llvm-libc-common.h>
+#include "__llvm-libc-common.h"
 
-#include <llvm-libc-types/rpc_opcodes_t.h>
+#include "llvm-libc-types/rpc_opcodes_t.h"
 
 %%public_api()