dbghelp: Add some missing prototypes and types.

include/dbghelp.h

@@ -303,6 +303,14 @@ typedef struct _IMAGEHLP_CBA_EVENT
     PVOID       object;
 } IMAGEHLP_CBA_EVENT, *PIMAGEHLP_CBA_EVENT;
 
+typedef struct _IMAGEHLP_CBA_EVENTW
+{
+    DWORD       severity;
+    DWORD       code;
+    PCWSTR      desc;
+    PVOID       object;
+} IMAGEHLP_CBA_EVENTW, *PIMAGEHLP_CBA_EVENTW;
+
 typedef struct _IMAGEHLP_DEFERRED_SYMBOL_LOAD
 {
     DWORD                       SizeOfStruct;
@@ -879,6 +887,18 @@ typedef struct _SYMBOL_INFOW
     WCHAR       Name[1];
 } SYMBOL_INFOW, *PSYMBOL_INFOW;
 
+typedef struct _SYMBOL_INFO_PACKAGE
+{
+    SYMBOL_INFO si;
+    CHAR        name[MAX_SYM_NAME+1];
+} SYMBOL_INFO_PACKAGE, *PSYMBOL_INFO_PACKAGE;
+
+typedef struct _SYMBOL_INFO_PACKAGEW
+{
+    SYMBOL_INFOW si;
+    WCHAR        name[MAX_SYM_NAME+1];
+} SYMBOL_INFO_PACKAGEW, *PSYMBOL_INFO_PACKAGEW;
+
 typedef enum _IMAGEHLP_SYMBOL_TYPE_INFO 
 {
     TI_GET_SYMTAG,
@@ -987,6 +1007,7 @@ BOOL WINAPI SymGetSymNextW64(HANDLE, PIMAGEHLP_SYMBOLW64);
 BOOL WINAPI SymGetSymPrev(HANDLE, PIMAGEHLP_SYMBOL);
 BOOL WINAPI SymGetSymPrev64(HANDLE, PIMAGEHLP_SYMBOL64);
 BOOL WINAPI SymGetSymPrevW64(HANDLE, PIMAGEHLP_SYMBOLW64);
+BOOL WINAPI SymEnumSym(HANDLE,ULONG64,PSYM_ENUMERATESYMBOLS_CALLBACK,PVOID);
 BOOL WINAPI SymEnumSymbols(HANDLE, ULONG64, PCSTR, PSYM_ENUMERATESYMBOLS_CALLBACK,
                            PVOID);
 BOOL WINAPI SymEnumSymbolsW(HANDLE, ULONG64, PCWSTR, PSYM_ENUMERATESYMBOLS_CALLBACKW,