remove CommitStatus.Index field, and update db index to use ID instead of Index.

Author: James

models/commit_status.go

@@ -21,12 +21,11 @@ import (
 
 // CommitStatus holds a single Status of a single Commit
 type CommitStatus struct {
-	ID          int64                 `xorm:"pk autoincr"`
-	Index       int64                 `xorm:"INDEX UNIQUE(repo_sha_index)"`
-	RepoID      int64                 `xorm:"INDEX UNIQUE(repo_sha_index)"`
+	ID          int64                 `xorm:"pk autoincr INDEX UNIQUE(repo_sha_id)"`
+	RepoID      int64                 `xorm:"INDEX UNIQUE(repo_sha_id)"`
 	Repo        *Repository           `xorm:"-"`
 	State       api.CommitStatusState `xorm:"VARCHAR(7) NOT NULL"`
-	SHA         string                `xorm:"VARCHAR(64) NOT NULL INDEX UNIQUE(repo_sha_index)"`
+	SHA         string                `xorm:"VARCHAR(64) NOT NULL INDEX UNIQUE(repo_sha_id)"`
 	TargetURL   string                `xorm:"TEXT"`
 	Description string                `xorm:"TEXT"`
 	ContextHash string                `xorm:"char(40) index"`