Reflow paragraphs in comments.

This is intended as a clean up after the big clang-format commit
(r280751), which unfortunately resulted in many of the comment
paragraphs in LLDB being very hard to read.

FYI, the script I used was:

import textwrap
import commands
import os
import sys
import re
tmp = "%s.tmp"%sys.argv[1]
out = open(tmp, "w+")
with open(sys.argv[1], "r") as f:
  header = ""
  text = ""
  comment = re.compile(r'^( *//) ([^ ].*)$')
  special = re.compile(r'^((([A-Z]+[: ])|([0-9]+ )).*)|(.*;)$')
  for line in f:
      match = comment.match(line)
      if match and not special.match(match.group(2)):
          # skip intentionally short comments.
          if not text and len(match.group(2)) < 40:
              out.write(line)
              continue

          if text:
              text += " " + match.group(2)
          else:
              header = match.group(1)
              text = match.group(2)

          continue

      if text:
          filled = textwrap.wrap(text, width=(78-len(header)),
                                 break_long_words=False)
          for l in filled:
              out.write(header+" "+l+'\n')
              text = ""

      out.write(line)

os.rename(tmp, sys.argv[1])

Differential Revision: https://reviews.llvm.org/D46144

llvm-svn: 331197
diff --git a/lldb/source/Plugins/SystemRuntime/MacOSX/AppleGetThreadItemInfoHandler.cpp b/lldb/source/Plugins/SystemRuntime/MacOSX/AppleGetThreadItemInfoHandler.cpp
index 8d83922..09ab660 100644
--- a/lldb/source/Plugins/SystemRuntime/MacOSX/AppleGetThreadItemInfoHandler.cpp
+++ b/lldb/source/Plugins/SystemRuntime/MacOSX/AppleGetThreadItemInfoHandler.cpp
@@ -128,11 +128,9 @@
 }
 
 // Compile our __lldb_backtrace_recording_get_thread_item_info() function (from
-// the
-// source above in g_get_thread_item_info_function_code) if we don't find that
-// function in the inferior
-// already with USE_BUILTIN_FUNCTION defined.  (e.g. this would be the case for
-// testing.)
+// the source above in g_get_thread_item_info_function_code) if we don't find
+// that function in the inferior already with USE_BUILTIN_FUNCTION defined.
+// (e.g. this would be the case for testing.)
 //
 // Insert the __lldb_backtrace_recording_get_thread_item_info into the inferior
 // process if needed.
@@ -141,8 +139,7 @@
 // prepare for the call.
 //
 // Returns the address of the arguments written down in the inferior process,
-// which can be used to
-// make the function call.
+// which can be used to make the function call.
 
 lldb::addr_t AppleGetThreadItemInfoHandler::SetupGetThreadItemInfoFunction(
     Thread &thread, ValueList &get_thread_item_info_arglist) {
@@ -221,10 +218,9 @@
   diagnostics.Clear();
 
   // Now write down the argument values for this particular call.  This looks
-  // like it might be a race condition
-  // if other threads were calling into here, but actually it isn't because we
-  // allocate a new args structure for
-  // this call by passing args_addr = LLDB_INVALID_ADDRESS...
+  // like it might be a race condition if other threads were calling into here,
+  // but actually it isn't because we allocate a new args structure for this
+  // call by passing args_addr = LLDB_INVALID_ADDRESS...
 
   if (!get_thread_item_info_caller->WriteFunctionArguments(
           exe_ctx, args_addr, get_thread_item_info_arglist, diagnostics)) {
@@ -266,8 +262,7 @@
 
   // Set up the arguments for a call to
 
-  // struct get_thread_item_info_return_values
-  // {
+  // struct get_thread_item_info_return_values {
   //     uint64_t item_info_buffer_ptr;    /* the address of the items buffer
   //     from libBacktraceRecording */
   //     uint64_t item_info_buffer_size;   /* the size of the items buffer from
@@ -283,8 +278,7 @@
   //                                             uint64_t page_to_free_size)
 
   // Where the return_buffer argument points to a 24 byte region of memory
-  // already allocated by lldb in
-  // the inferior process.
+  // already allocated by lldb in the inferior process.
 
   CompilerType clang_void_ptr_type =
       clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType();