msvcrt: Add _mbschr_l implementation.

dlls/msvcr100/msvcr100.spec

@@ -1100,7 +1100,7 @@
 @ cdecl _mbscat_s(ptr long str)
 @ cdecl _mbscat_s_l(ptr long str ptr)
 @ cdecl _mbschr(str long)
-@ stub _mbschr_l
+@ cdecl _mbschr_l(str long ptr)
 @ cdecl _mbscmp(str str)
 @ cdecl _mbscmp_l(str str ptr)
 @ cdecl _mbscoll(str str)

dlls/msvcr110/msvcr110.spec

@@ -1457,7 +1457,7 @@
 @ cdecl _mbscat_s(ptr long str)
 @ cdecl _mbscat_s_l(ptr long str ptr)
 @ cdecl _mbschr(str long)
-@ stub _mbschr_l
+@ cdecl _mbschr_l(str long ptr)
 @ cdecl _mbscmp(str str)
 @ cdecl _mbscmp_l(str str ptr)
 @ cdecl _mbscoll(str str)

dlls/msvcr120/msvcr120.spec

@@ -1468,7 +1468,7 @@
 @ cdecl _mbscat_s(ptr long str)
 @ cdecl _mbscat_s_l(ptr long str ptr)
 @ cdecl _mbschr(str long)
-@ stub _mbschr_l
+@ cdecl _mbschr_l(str long ptr)
 @ cdecl _mbscmp(str str)
 @ cdecl _mbscmp_l(str str ptr)
 @ cdecl _mbscoll(str str)

dlls/msvcr80/msvcr80.spec

@@ -772,7 +772,7 @@
 @ cdecl _mbscat_s(ptr long str)
 @ cdecl _mbscat_s_l(ptr long str ptr)
 @ cdecl _mbschr(str long)
-@ stub _mbschr_l
+@ cdecl _mbschr_l(str long ptr)
 @ cdecl _mbscmp(str str)
 @ cdecl _mbscmp_l(str str ptr)
 @ cdecl _mbscoll(str str)

dlls/msvcr90/msvcr90.spec

@@ -750,7 +750,7 @@
 @ cdecl _mbscat_s(ptr long str)
 @ cdecl _mbscat_s_l(ptr long str ptr)
 @ cdecl _mbschr(str long)
-@ stub _mbschr_l
+@ cdecl _mbschr_l(str long ptr)
 @ cdecl _mbscmp(str str)
 @ cdecl _mbscmp_l(str str ptr)
 @ cdecl _mbscoll(str str)

dlls/msvcrt/mbcs.c

@@ -1344,18 +1344,25 @@ unsigned char * CDECL _mbsstr(const unsigned char *haystack, const unsigned char
 }
 
 /*********************************************************************
- *		_mbschr(MSVCRT.@)
- *
- * Find a multibyte character in a multibyte string.
+ *		_mbschr_l(MSVCRT.@)
  */
-unsigned char* CDECL _mbschr(const unsigned char* s, unsigned int x)
+unsigned char* CDECL _mbschr_l(const unsigned char* s, unsigned int x, _locale_t locale)
 {
-  if(get_mbcinfo()->ismbcodepage)
+  pthreadmbcinfo mbcinfo;
+
+  if(!MSVCRT_CHECK_PMT(s))
+    return NULL;
+
+  if(locale)
+      mbcinfo = locale->mbcinfo;
+  else
+      mbcinfo = get_mbcinfo();
+  if(mbcinfo->ismbcodepage)
   {
     unsigned int c;
     while (1)
     {
-      c = _mbsnextc(s);
+      c = _mbsnextc_l(s, locale);
       if (c == x)
         return (unsigned char*)s;
       if (!c)
@@ -1367,6 +1374,14 @@ unsigned char* CDECL _mbschr(const unsigned char* s, unsigned int x)
 }
 
 /*********************************************************************
+ *		_mbschr(MSVCRT.@)
+ */
+unsigned char* CDECL _mbschr(const unsigned char* s, unsigned int x)
+{
+  return _mbschr_l(s, x, NULL);
+}
+
+/*********************************************************************
  *		_mbsrchr(MSVCRT.@)
  */
 unsigned char* CDECL _mbsrchr(const unsigned char* s, unsigned int x)

dlls/msvcrt/msvcrt.spec

@@ -718,7 +718,7 @@
 @ cdecl _mbscat_s(ptr long str)
 @ cdecl _mbscat_s_l(ptr long str ptr)
 @ cdecl _mbschr(str long)
-# stub _mbschr_l(str long ptr)
+@ cdecl _mbschr_l(str long ptr)
 @ cdecl _mbscmp(str str)
 @ cdecl _mbscmp_l(str str ptr)
 @ cdecl _mbscoll(str str)

dlls/ucrtbase/ucrtbase.spec

@@ -614,7 +614,7 @@
 @ cdecl _mbscat_s(ptr long str)
 @ cdecl _mbscat_s_l(ptr long str ptr)
 @ cdecl _mbschr(str long)
-@ stub _mbschr_l
+@ cdecl _mbschr_l(str long ptr)
 @ cdecl _mbscmp(str str)
 @ cdecl _mbscmp_l(str str ptr)
 @ cdecl _mbscoll(str str)
@@ -1184,7 +1184,7 @@
 @ cdecl _o__mbscat_s(ptr long str) _mbscat_s
 @ cdecl _o__mbscat_s_l(ptr long str ptr) _mbscat_s_l
 @ cdecl _o__mbschr(str long) _mbschr
-@ stub _o__mbschr_l
+@ cdecl _o__mbschr_l(str long ptr) _mbschr_l
 @ cdecl _o__mbscmp(str str) _mbscmp
 @ cdecl _o__mbscmp_l(str str ptr) _mbscmp_l
 @ cdecl _o__mbscoll(str str) _mbscoll