Remove \brief commands from doxygen comments.

This is similar to the LLVM change https://reviews.llvm.org/D46290.

We've been running doxygen with the autobrief option for a couple of
years now. This makes the \brief markers into our comments
redundant. Since they are a visual distraction and we don't want to
encourage more \brief markers in new code either, this patch removes
them all.

Patch produced by

for i in $(git grep -l '\@brief'); do perl -pi -e 's/\@brief //g' $i & done
for i in $(git grep -l '\\brief'); do perl -pi -e 's/\\brief //g' $i & done

Differential Revision: https://reviews.llvm.org/D46320

llvm-svn: 331834
diff --git a/clang/lib/Frontend/TextDiagnostic.cpp b/clang/lib/Frontend/TextDiagnostic.cpp
index 9bda79a..85cd019 100644
--- a/clang/lib/Frontend/TextDiagnostic.cpp
+++ b/clang/lib/Frontend/TextDiagnostic.cpp
@@ -42,7 +42,7 @@
 static const enum raw_ostream::Colors savedColor =
   raw_ostream::SAVEDCOLOR;
 
-/// \brief Add highlights to differences in template strings.
+/// Add highlights to differences in template strings.
 static void applyTemplateHighlighting(raw_ostream &OS, StringRef Str,
                                       bool &Normal, bool Bold) {
   while (1) {
@@ -63,7 +63,7 @@
   }
 }
 
-/// \brief Number of spaces to indent when word-wrapping.
+/// Number of spaces to indent when word-wrapping.
 const unsigned WordWrapIndentation = 6;
 
 static int bytesSincePreviousTabOrLineBegin(StringRef SourceLine, size_t i) {
@@ -76,7 +76,7 @@
   return bytes;
 }
 
-/// \brief returns a printable representation of first item from input range
+/// returns a printable representation of first item from input range
 ///
 /// This function returns a printable representation of the next item in a line
 ///  of source. If the next byte begins a valid and printable character, that
@@ -269,14 +269,14 @@
   int columns() const { return m_byteToColumn.back(); }
   int bytes() const { return m_columnToByte.back(); }
 
-  /// \brief Map a byte to the column which it is at the start of, or return -1
+  /// Map a byte to the column which it is at the start of, or return -1
   /// if it is not at the start of a column (for a UTF-8 trailing byte).
   int byteToColumn(int n) const {
     assert(0<=n && n<static_cast<int>(m_byteToColumn.size()));
     return m_byteToColumn[n];
   }
 
-  /// \brief Map a byte to the first column which contains it.
+  /// Map a byte to the first column which contains it.
   int byteToContainingColumn(int N) const {
     assert(0 <= N && N < static_cast<int>(m_byteToColumn.size()));
     while (m_byteToColumn[N] == -1)
@@ -284,7 +284,7 @@
     return m_byteToColumn[N];
   }
 
-  /// \brief Map a column to the byte which starts the column, or return -1 if
+  /// Map a column to the byte which starts the column, or return -1 if
   /// the column the second or subsequent column of an expanded tab or similar
   /// multi-column entity.
   int columnToByte(int n) const {
@@ -292,14 +292,14 @@
     return m_columnToByte[n];
   }
 
-  /// \brief Map from a byte index to the next byte which starts a column.
+  /// Map from a byte index to the next byte which starts a column.
   int startOfNextColumn(int N) const {
     assert(0 <= N && N < static_cast<int>(m_byteToColumn.size() - 1));
     while (byteToColumn(++N) == -1) {}
     return N;
   }
 
-  /// \brief Map from a byte index to the previous byte which starts a column.
+  /// Map from a byte index to the previous byte which starts a column.
   int startOfPreviousColumn(int N) const {
     assert(0 < N && N < static_cast<int>(m_byteToColumn.size()));
     while (byteToColumn(--N) == -1) {}
@@ -317,7 +317,7 @@
 };
 } // end anonymous namespace
 
-/// \brief When the source code line we want to print is too long for
+/// When the source code line we want to print is too long for
 /// the terminal, select the "interesting" region.
 static void selectInterestingSourceRegion(std::string &SourceLine,
                                           std::string &CaretLine,
@@ -507,7 +507,7 @@
   }
 }
 
-/// \brief Skip over whitespace in the string, starting at the given
+/// Skip over whitespace in the string, starting at the given
 /// index.
 ///
 /// \returns The index of the first non-whitespace character that is
@@ -519,7 +519,7 @@
   return Idx;
 }
 
-/// \brief If the given character is the start of some kind of
+/// If the given character is the start of some kind of
 /// balanced punctuation (e.g., quotes or parentheses), return the
 /// character that will terminate the punctuation.
 ///
@@ -539,7 +539,7 @@
   return 0;
 }
 
-/// \brief Find the end of the word starting at the given offset
+/// Find the end of the word starting at the given offset
 /// within a string.
 ///
 /// \returns the index pointing one character past the end of the
@@ -596,7 +596,7 @@
   return findEndOfWord(Start + 1, Str, Length, Column + 1, Columns);
 }
 
-/// \brief Print the given string to a stream, word-wrapping it to
+/// Print the given string to a stream, word-wrapping it to
 /// some number of columns in the process.
 ///
 /// \param OS the stream to which the word-wrapping string will be
@@ -777,7 +777,7 @@
   OS << Filename;
 }
 
-/// \brief Print out the file/line/column information and include trace.
+/// Print out the file/line/column information and include trace.
 ///
 /// This method handlen the emission of the diagnostic location information.
 /// This includes extracting as much location information as is present for
@@ -913,7 +913,7 @@
     OS << "While building module '" << ModuleName << "':\n";
 }
 
-/// \brief Find the suitable set of lines to show to include a set of ranges.
+/// Find the suitable set of lines to show to include a set of ranges.
 static llvm::Optional<std::pair<unsigned, unsigned>>
 findLinesForRange(const CharSourceRange &R, FileID FID,
                   const SourceManager &SM) {
@@ -963,7 +963,7 @@
   return A;
 }
 
-/// \brief Highlight a SourceRange (with ~'s) for any characters on LineNo.
+/// Highlight a SourceRange (with ~'s) for any characters on LineNo.
 static void highlightRange(const CharSourceRange &R,
                            unsigned LineNo, FileID FID,
                            const SourceColumnMap &map,
@@ -1110,7 +1110,7 @@
   return FixItInsertionLine;
 }
 
-/// \brief Emit a code snippet and caret line.
+/// Emit a code snippet and caret line.
 ///
 /// This routine emits a single line's code snippet and caret line..
 ///