移动安装目录，支持根目录index.php访问，也可以像tp5一样只对外开放crmeb一个目录

crmeb/install/index.php

@@ -336,6 +336,7 @@ switch ($step) {
 }
 
 function testwrite($d) {
+    if(is_dir($d)){
         $tfile = "_test.txt";
         $fp = @fopen($d . "/" . $tfile, "w");
         if (!$fp) {
@@ -347,6 +348,13 @@ function testwrite($d) {
             return true;
         }
         return false;
+    }else{
+        if(is_writeable($d)){
+            return true;
+        }
+        return false;
+    }
+
 }
 
 function sql_execute($sql, $tablepre) {

crmeb/install/templates/step2.php

@@ -85,12 +85,14 @@
 		     $Testdir = CRMEBDIR.$dir;
 //			 echo $Testdir."<br/>";
              dir_create($Testdir);
-			 if(TestWrite($Testdir)){
+             if(testwrite($Testdir)){
                  $w = '<span class="correct_span">&radic;</span>可写 ';
              }else{
                  $w = '<span class="correct_span error_span">&radic;</span>不可写 ';
                  $err++;
              }
+
+
 			 if(is_readable($Testdir)){
 			     $r = '<span class="correct_span">&radic;</span>可读' ;
 			 }else{