* cygcheck.cc (usage) Add description output.

winsup/utils/cygpath.cc

@@ -65,6 +65,8 @@ usage (FILE * stream, int status)
     fprintf (stream, "\
 Usage: %s (-d|-m|-u|-w|-t TYPE) [-c HANDLE] [-f FILE] [options] NAME\n\
        %s [-ADHPSW] \n\
+Convert Unix and Windows format paths, or output system path information\n\
+\n\ 
 Output type options:\n\
   -d, --dos	        print DOS (short) form of NAME (C:\\PROGRA~1\\)\n\
   -m, --mixed           like --windows, but with regular slashes (C:/WINNT)\n\