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/docs/doxygen.cfg.in b/lldb/docs/doxygen.cfg.in
index 725a26f..0c20660 100644
--- a/lldb/docs/doxygen.cfg.in
+++ b/lldb/docs/doxygen.cfg.in
@@ -137,7 +137,7 @@
 # comments will behave just like regular Qt-style comments
 # (thus requiring an explicit @brief command for a brief description.)
 
-JAVADOC_AUTOBRIEF      = NO
+JAVADOC_AUTOBRIEF      = YES
 
 # If the QT_AUTOBRIEF tag is set to YES then Doxygen will
 # interpret the first line (until the first dot) of a Qt-style
@@ -145,7 +145,7 @@
 # will behave just like regular Qt-style comments (thus requiring
 # an explicit \brief command for a brief description.)
 
-QT_AUTOBRIEF           = NO
+QT_AUTOBRIEF           = YES
 
 # The MULTILINE_CPP_IS_BRIEF tag can be set to YES to make Doxygen
 # treat a multi-line C++ special comment block (i.e. a block of //! or ///