ael: Regenerate lexers and parsers.

Various changes to ensure that the lexers and parsers can be correctly
generated when REBUILD_PARSERS is enabled.

Some notes:

* Because of the version of flex we are using to generate the lexers
  (2.5.35) some post-processing in the Makefile is still required.

* The generated lexers do not contain the problematic C99 check that
  was being replaced by the call to sed in the respective Makefiles so
  it was removed.

* Since these files are generated, they will include trailing
  whitespace in some places. This does not need to be corrected.

Change-Id: Ibbd343606fcf5c0d285b1599e6e8e59f514f2e4e
(cherry picked from commit ee4278959a)

main/ast_expr2.h

@@ -2,20 +2,20 @@
 /* A Bison parser, made by GNU Bison 2.4.1.  */
 
 /* Skeleton interface for Bison's Yacc-like parsers in C
-
+   
       Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006
    Free Software Foundation, Inc.
-
+   
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
-
+   
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
-
+   
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
@@ -28,7 +28,7 @@
    special exception, which will cause the skeleton and the resulting
    Bison output files to be licensed under the GNU General Public
    License without this special exception.
-
+   
    This special exception was added by the Free Software Foundation in
    version 2.2 of Bison.  */
 
@@ -72,7 +72,7 @@ typedef union YYSTYPE
 {
 
 /* Line 1676 of yacc.c  */
-#line 345 "ast_expr2.y"
+#line 343 "ast_expr2.y"
 
 	struct val *val;
 	struct expr_node *arglist;
@@ -101,3 +101,6 @@ typedef struct YYLTYPE
 # define YYLTYPE_IS_DECLARED 1
 # define YYLTYPE_IS_TRIVIAL 1
 #endif
+
+
+