Enable AUTOBRIEF in doxygen configuration.

This brings the LLDB configuration closer to LLVM's and removes visual
clutter in the source code by removing the @brief commands from
comments.

This patch also reflows the paragraphs in all doxygen comments.

See also https://reviews.llvm.org/D46290.

Differential Revision: https://reviews.llvm.org/D46321

llvm-svn: 331373
diff --git a/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.h b/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.h
index 7b2a379..e84c803 100644
--- a/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.h
+++ b/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.h
@@ -54,10 +54,10 @@
 
 //------------------------------------------------------------------------------
 /// @class ObjectFileELF
-/// @brief Generic ELF object file reader.
+/// Generic ELF object file reader.
 ///
-/// This class provides a generic ELF (32/64 bit) reader plugin implementing the
-/// ObjectFile protocol.
+/// This class provides a generic ELF (32/64 bit) reader plugin implementing
+/// the ObjectFile protocol.
 class ObjectFileELF : public lldb_private::ObjectFile {
 public:
   ~ObjectFileELF() override;
@@ -260,8 +260,8 @@
                                  uint64_t length,
                                  lldb_private::ArchSpec &arch_spec);
 
-  /// Parses the elf section headers and returns the uuid, debug link name, crc,
-  /// archspec.
+  /// Parses the elf section headers and returns the uuid, debug link name,
+  /// crc, archspec.
   static size_t GetSectionHeaderInfo(SectionHeaderColl &section_headers,
                                      lldb_private::DataExtractor &object_data,
                                      const elf::ELFHeader &header,