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/Language/CPlusPlus/LibCxx.cpp b/lldb/source/Plugins/Language/CPlusPlus/LibCxx.cpp
index f6d1f18..95e02a4 100644
--- a/lldb/source/Plugins/Language/CPlusPlus/LibCxx.cpp
+++ b/lldb/source/Plugins/Language/CPlusPlus/LibCxx.cpp
@@ -123,12 +123,11 @@
   
   static ConstString g___i_("__i_");
   
-  // this must be a ValueObject* because it is a child of the ValueObject we are
-  // producing children for
-  // it if were a ValueObjectSP, we would end up with a loop (iterator ->
-  // synthetic -> child -> parent == iterator)
-  // and that would in turn leak memory by never allowing the ValueObjects to
-  // die and free their memory
+  // this must be a ValueObject* because it is a child of the ValueObject we
+  // are producing children for it if were a ValueObjectSP, we would end up
+  // with a loop (iterator -> synthetic -> child -> parent == iterator) and
+  // that would in turn leak memory by never allowing the ValueObjects to die
+  // and free their memory
   m_pair_ptr = valobj_sp
                    ->GetValueForExpressionPath(
                        ".__i_.__ptr_->__value_", nullptr, nullptr,
@@ -386,7 +385,8 @@
 };
 
 // this function abstracts away the layout and mode details of a libc++ string
-// and returns the address of the data and the size ready for callers to consume
+// and returns the address of the data and the size ready for callers to
+// consume
 static bool ExtractLibcxxStringInfo(ValueObject &valobj,
                                     ValueObjectSP &location_sp,
                                     uint64_t &size) {