remove some external header guards

Change-Id: I5a51dc496835f0998a3422f2a1f0f2ff8bb3c13f

external/mysqlcppconn/patches/mysql-connector-c++-1.1.0.patch

 --- misc/mysql-connector-c++-1.1.0/cppconn/build_config.h	2010-09-10 11:47:47.000000000 +0200
 +++ misc/build/mysql-connector-c++-1.1.0/cppconn/build_config.h	2011-11-12 00:45:19.000000000 +0100
-@@ -25,25 +25,23 @@
+@@ -25,25 +25,21 @@
  #ifndef _SQL_BUILD_CONFIG_H_
  #define _SQL_BUILD_CONFIG_H_
  
 -#ifndef CPPCONN_PUBLIC_FUNC
-+#ifndef _SAL_TYPES_H_
 +#include <sal/types.h>
-+#endif
  
 -#if defined(_WIN32)
   // mysqlcppconn_EXPORTS is added by cmake and defined for dynamic lib build only

sal/textenc/generate/big5hkscs2001.pl

@@ -452,9 +452,7 @@ open OUT, ("> " . $filename) or die "Cannot write " . $filename;
 }
 
 print OUT "\n",
-          "#ifndef _SAL_TYPES_H_\n",
           "#include \"sal/types.h\"\n",
-          "#endif\n",
           "\n";
 
 print OUT "static sal_uInt16 const aImpl", $id, "ToUnicodeData[] = {\n";

sal/textenc/generate/big5hkscs2001.tab

@@ -16,9 +16,7 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
-#ifndef _SAL_TYPES_H_
 #include "sal/types.h"
-#endif
 
 static sal_uInt16 const aImplBig5Hkscs2001ToUnicodeData[] = {
  /* row 0: --- */

sal/textenc/generate/cns116431992.pl

@@ -433,9 +433,7 @@ open OUT, ("> " . $filename) or die "Cannot write " . $filename;
 }
 
 print OUT "\n",
-          "#ifndef _SAL_TYPES_H_\n",
           "#include \"sal/types.h\"\n",
-          "#endif\n",
           "\n";
 
 print OUT "static sal_uInt16 const aImpl", $id, "ToUnicodeData[] = {\n";

sal/textenc/generate/cns116431992.tab

@@ -16,9 +16,7 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
-#ifndef _SAL_TYPES_H_
 #include "sal/types.h"
-#endif
 
 static sal_uInt16 const aImplCns116431992ToUnicodeData[] = {
  /* plane 1, row 1 */

sal/textenc/generate/gb180302000.pl

@@ -224,13 +224,9 @@ open OUT, ("> " . $filename) or die "Cannot write " . $filename;
 }
 
 print OUT "\n",
-          "#ifndef INCLUDED_RTL_TEXTENC_CONVERTGB18030_H\n",
           "#include \"convertgb18030.h\"\n",
-          "#endif\n",
           "\n",
-          "#ifndef _SAL_TYPES_H_\n",
           "#include \"sal/types.h\"\n",
-          "#endif\n",
           "\n";
 
 print OUT "static sal_Unicode const aImpl", $id, "ToUnicodeData[] = {\n  ";