Fix compilation error, where DWORD is not defined

As per https://msdn.microsoft.com/en-us/library/cc230318.aspx DWORD is equivalent to uint32_t

SimpleGlob.h

@@ -166,6 +166,7 @@ enum SG_Error {
 // Unix glob functionality. On Unix we just use glob.
 #ifdef _WIN32
 # include <mbstring.h>
+# include <stdint.h>
 # define sg_strchr          ::_mbschr
 # define sg_strrchr         ::_mbsrchr
 # define sg_strlen          ::_mbslen
@@ -177,6 +178,9 @@ enum SG_Error {
 # define sg_strcmp          ::_mbscmp
 # define sg_strcasecmp      ::_mbsicmp
 # define SOCHAR_T           unsigned char
+# ifndef _WINDOWS_
+typedef ::uint32_t DWORD;
+# endif
 #else
 # include <sys/types.h>
 # include <sys/stat.h>