msvcp90: Added basic_string<char> constructor implementation (from cstr).

dlls/msvcp90/msvcp90.spec

@@ -743,10 +743,10 @@
 @ stub -arch=win32 ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ID@Z
 @ stub -arch=win64 ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAA@PEBD0@Z
 @ stub -arch=win32 ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@IDABV?$allocator@D@1@@Z
-@ stub -arch=win64 ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAA@PEBD@Z
+@ cdecl -arch=win64 ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAA@PEBD@Z(ptr str) MSVCP_basic_string_char_ctor_cstr
 @ stub -arch=win32 ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@PBD0@Z
 @ stub -arch=win64 ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAA@PEBDAEBV?$allocator@D@1@@Z
-@ stub -arch=win32 ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@PBD@Z
+@ cdecl -arch=win32 -i386 -norelay ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@PBD@Z(str) __thiscall_MSVCP_basic_string_char_ctor_cstr
 @ stub -arch=win64 ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAA@PEBD_K@Z
 @ stub -arch=win32 ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@PBDABV?$allocator@D@1@@Z
 @ stub -arch=win64 ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAA@PEBD_KAEBV?$allocator@D@1@@Z

dlls/msvcp90/string.c

@@ -679,6 +679,19 @@ basic_string_char* __stdcall MSVCP_basic_string_char_copy_ctor(
     return this;
 }
 
+/* ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@PBD@Z */
+/* ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAA@PEBD@Z */
+DEFINE_THISCALL_WRAPPER(MSVCP_basic_string_char_ctor_cstr, 8)
+basic_string_char* __stdcall MSVCP_basic_string_char_ctor_cstr(
+        basic_string_char *this, const char *str)
+{
+    TRACE("%p %s\n", this, debugstr_a(str));
+
+    basic_string_char_tidy(this, FALSE, 0);
+    MSVCP_basic_string_char_assign_cstr(this, str);
+    return this;
+}
+
 /* ??1?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@XZ */
 /* ??1?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAA@XZ */
 DEFINE_THISCALL_WRAPPER(MSVCP_basic_string_char_dtor, 4)