StdLib: Fix printf issues with floating point and wide character strings. Also resolves a compilation issue with VS2010. See ISSUES.txt items 1, 11.

ISSUES.txt:  Added issue 11, updated status of issue 1.

gdtoa/gdtoaimp.h:  Fix definition of union U.

Locale/_wcstod.h:  Return 0.0 instead of 0 in the "no_convert" case.

Locale/multibyte_Utf8.c:  In wcsrtombs(), if both the destination pointer is NULL and the size, Limit, is 0; return the estimated length of the converted string up to ASCII_STRING_MAX bytes.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by:  daryl.mcdaniel@intel.com
Reviewed-by:    Aniruddha_Herekar@Dell.com


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14171 6f19259b-4bc3-4df7-8a09-765794883524

StdLib/LibC/Locale/multibyte_Utf8.c

@@ -14,6 +14,7 @@
 #include  <stdlib.h>
 #include  <wchar.h>
 #include  <sys/types.h>
+#include  <limits.h>
 
 typedef      int      ch_UCS4;
 
@@ -913,6 +914,9 @@ wcsrtombs(
     return (0);
 
   if (Dest == NULL) {
+    if(MaxBytes <= 0) {
+      MaxBytes = ASCII_STRING_MAX;
+    }
     NumStored = EstimateWtoM(*Src, MaxBytes, NULL);
   }
   else {