* dcrt0.cc (initial_env): Force path and CYGWIN_DEBUG contents to lower case.

* exceptions.cc (error_start_init): Use the name derived from GetModuleName
rather than myself->progname.

winsup/cygwin/dcrt0.cc

@@ -810,6 +810,8 @@ initial_env ()
     {
       char buf1[MAX_PATH + 1];
       len = GetModuleFileName (NULL, buf1, MAX_PATH);
+      strlwr (buf1);
+      strlwr (buf);
       char *p = strchr (buf, '=');
       if (!p)
 	p = (char *) "gdb.exe -nw";