MSVC: Drop default use of /Zm1000 for VS >= 7.1

From the option documentation of VS >= 7.1:

 "In earlier versions of Visual C++, the compiler used several discrete
  heaps, and each had a finite limit. Currently, the compiler dynamically
  grows the heaps as necessary up to a total heap size limit, and requires
  a fixed-size buffer only to construct precompiled headers. Consequently,
  the /Zm compiler option is rarely necessary."
 http://msdn.microsoft.com/en-us/library/bdscwf1c.aspx

Suggested-by: Adam Moss <[email protected]>

Modules/Platform/Windows-MSVC.cmake

@@ -154,6 +154,11 @@ else()
     set(_FLAGS_CXX " /GR /GX")
     set(CMAKE_C_STANDARD_LIBRARIES_INIT "kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib")
   endif()
+
+  if(MSVC_VERSION LESS 1310)
+    set(_FLAGS_C   " /Zm1000${_FLAGS_C}")
+    set(_FLAGS_CXX " /Zm1000${_FLAGS_CXX}")
+  endif()
 endif()
 
 set(CMAKE_CXX_STANDARD_LIBRARIES_INIT "${CMAKE_C_STANDARD_LIBRARIES_INIT}")
@@ -233,7 +238,7 @@ macro(__windows_compiler_msvc lang)
   set(CMAKE_${lang}_LINK_EXECUTABLE
     "${_CMAKE_VS_LINK_EXE}<CMAKE_${lang}_COMPILER> ${CMAKE_CL_NOLOGO} ${CMAKE_START_TEMP_FILE} <FLAGS> /Fe<TARGET> /Fd<TARGET_PDB> <OBJECTS> /link /implib:<TARGET_IMPLIB> /version:<TARGET_VERSION_MAJOR>.<TARGET_VERSION_MINOR> <CMAKE_${lang}_LINK_FLAGS> <LINK_FLAGS> <LINK_LIBRARIES>${CMAKE_END_TEMP_FILE}")
 
-  set(CMAKE_${lang}_FLAGS_INIT "${_PLATFORM_DEFINES}${_PLATFORM_DEFINES_${lang}} /D_WINDOWS /W3 /Zm1000${_FLAGS_${lang}}")
+  set(CMAKE_${lang}_FLAGS_INIT "${_PLATFORM_DEFINES}${_PLATFORM_DEFINES_${lang}} /D_WINDOWS /W3${_FLAGS_${lang}}")
   set(CMAKE_${lang}_FLAGS_DEBUG_INIT "/D_DEBUG /MDd /Zi /Ob0 /Od ${_RTC1}")
   set(CMAKE_${lang}_FLAGS_RELEASE_INIT "/MD /O2 /Ob2 /D NDEBUG")
   set(CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT "/MD /Zi /O2 /Ob1 /D NDEBUG")