merged from trunk rev.4513 by jon_y:
_set_purecall_handler isn't in msvcrt, but its in msvcrXX DLLs.

git-svn-id: svn+ssh://svn.code.sf.net/p/mingw-w64/code/stable/v2.x@4514 4407c894-4637-0410-b4f5-ada5f102cad1

mingw-w64-crt/lib32/msvcrt.def

diff --git a/mingw-w64-crt/lib32/msvcrt.def b/mingw-w64-crt/lib32/msvcrt.def
index 622160e..c77a523 100644
--- a/mingw-w64-crt/lib32/msvcrt.def
+++ b/mingw-w64-crt/lib32/msvcrt.def
@@ -800,7 +800,8 @@
 __pctype_func
 __pwctype_func
 _get_heap_handle
-_set_purecall_handler
+; Does not seem to present even on Win7 msvcrt
+;_set_purecall_handler
 _set_SSE2_enable
 ; msvcr80.dll and later
 _atodbl_l