Configure: fixed autotest cleanup commands.

Previously, if configured with --with-cc="clang -g", the autotest.dSYM
directories were left unremoved.

auto/types/sizeof

@@ -45,7 +45,7 @@ if [ -x $NGX_AUTOTEST ]; then
 fi
 
 
-rm -f $NGX_AUTOTEST
+rm -rf $NGX_AUTOTEST*
 
 
 case $ngx_size in

auto/types/typedef

@@ -49,7 +49,7 @@ END
         fi
     fi
 
-    rm -f $NGX_AUTOTEST
+    rm -rf $NGX_AUTOTEST*
 
     if [ $ngx_found = no ]; then
         echo $ngx_n " $ngx_try not found$ngx_c"

auto/types/uintptr_t

@@ -33,7 +33,7 @@ else
     echo $ngx_n " uintptr_t not found" $ngx_c
 fi
 
-rm $NGX_AUTOTEST*
+rm -rf $NGX_AUTOTEST*
 
 
 if [ $found = no ]; then