BUG#20815 for the 5.1 branch

CMakeLists.txt:
  BUG#20815 do not use 10MB of stack space per thread, enforce the previous 5.0 default of 1M

CMakeLists.txt

@@ -136,6 +136,9 @@ IF(CMAKE_GENERATOR MATCHES "Visual Studio 7" OR
 	# generate .map files  
 	SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /MAP /MAPINFO:EXPORTS")
 
+  # set stack size (see bug#20815)
+  SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /STACK:1048576")
+
 	# remove support for Exception handling
 	STRING(REPLACE "/GX" "" CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})
 	STRING(REPLACE "/EHsc" "" CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})