Bug#52514: mysql 5.1 do_abi_check does not compile w/ gcc4.5

           due to GCC preprocessor change
      
Addendum for trunk: add -DMYSQL_ABI_CHECK to the cmake ABI check.

cmake/abi_check.cmake

@@ -38,7 +38,7 @@ IF(CMAKE_COMPILER_IS_GNUCC AND CMAKE_SYSTEM_NAME MATCHES "Linux")
     -DCOMPILER=${COMPILER}
     -DSOURCE_DIR=${CMAKE_SOURCE_DIR}
     -DBINARY_DIR=${CMAKE_BINARY_DIR}
-    "-DABI_HEADERS=${API_PREPROCESSOR_HEADER}"
+    "-DDMYSQL_ABI_CHECK -DABI_HEADERS=${API_PREPROCESSOR_HEADER}"
     -P ${CMAKE_SOURCE_DIR}/cmake/do_abi_check.cmake
     VERBATIM
   )
@@ -48,7 +48,7 @@ IF(CMAKE_COMPILER_IS_GNUCC AND CMAKE_SYSTEM_NAME MATCHES "Linux")
     -DCMAKE_C_COMPILER=${COMPILER} 
     -DCMAKE_SOURCE_DIR=${CMAKE_SOURCE_DIR}
     -DCMAKE_BINARY_DIR=${CMAKE_BINARY_DIR}
-    "-DABI_HEADERS=${API_PREPROCESSOR_HEADER}"
+    "-DMYSQL_ABI_CHECK -DABI_HEADERS=${API_PREPROCESSOR_HEADER}"
     -P ${CMAKE_SOURCE_DIR}/cmake/scripts/do_abi_check.cmake
     VERBATIM
   )