Provide configuration support and usage for MINGW32 platform

llvm-svn: 28639
diff --git a/llvm/autoconf/configure.ac b/llvm/autoconf/configure.ac
index c827ec7..2c2f2ce 100644
--- a/llvm/autoconf/configure.ac
+++ b/llvm/autoconf/configure.ac
@@ -487,10 +487,8 @@
 AC_CHECK_LIB(elf, elf_begin)
 AC_CHECK_LIB(m,sin)
 if test "$llvm_cv_os_type" == "MingW" ; then
-  AC_CHECK_HEADERS([windows.h])
-  AC_CHECK_HEADERS([imagehlp.h psapi.h])
-  AC_CHECK_LIB(imagehlp,[SymGetOptions])
-  AC_CHECK_LIB(psapi,[GetProcessMemoryInfo])
+  AC_CHECK_LIB(imagehlp, main)
+  AC_CHECK_LIB(psapi, main)
 fi
 
 dnl lt_dlopen may be required for plugin support.