Fix more wrong paths in header comments

It appears that there are more files, whose header comment paths are
wrong.  So, fix those paths.  No backpatching per proposal of Tom Lane.

Discussion: https://postgr.es/m/CAPpHfdsJyYbOj59MOQL%2B4XxdcomLSLfLqBtAvwR%2BpsCqj3ELdQ%40mail.gmail.com

Author: akorotkov

src/backend/access/common/bufmask.c

@@ -10,7 +10,7 @@
  * Contains common routines required for masking a page.
  *
  * IDENTIFICATION
- *	  src/backend/storage/buffer/bufmask.c
+ *	  src/backend/access/common/bufmask.c
  *
  *-------------------------------------------------------------------------
  */

src/backend/commands/dropcmds.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  src/backend/catalog/dropcmds.c
+ *	  src/backend/commands/dropcmds.c
  *
  *-------------------------------------------------------------------------
  */

src/backend/jit/llvm/llvmjit_types.c

@@ -19,7 +19,7 @@
  * Copyright (c) 2016-2018, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
- *	  src/backend/lib/llvmjit_types.c
+ *	  src/backend/jit/llvm/llvmjit_types.c
  *
  *-------------------------------------------------------------------------
  */

src/backend/utils/cache/relfilenodemap.c

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  src/backend/utils/cache/relfilenode.c
+ *	  src/backend/utils/cache/relfilenodemap.c
  *
  *-------------------------------------------------------------------------
  */

src/backend/utils/misc/queryenvironment.c

@@ -16,7 +16,7 @@
  *
  *
  * IDENTIFICATION
- *	  src/backend/backend/utils/misc/queryenvironment.c
+ *	  src/backend/utils/misc/queryenvironment.c
  *
  *-------------------------------------------------------------------------
  */

src/backend/utils/mmgr/memdebug.c

@@ -8,7 +8,7 @@
  * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * src/backend/utils/memdebug.c
+ * src/backend/utils/mmgr/memdebug.c
  *
  *
  *	About CLOBBER_FREED_MEMORY:

src/backend/utils/sort/sharedtuplestore.c

@@ -14,7 +14,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  src/backend/util/sort/sharedtuplestore.c
+ *	  src/backend/utils/sort/sharedtuplestore.c
  *
  *-------------------------------------------------------------------------
  */

src/common/file_perm.c

@@ -6,7 +6,7 @@
  * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * src/include/common/file_perm.c
+ * src/common/file_perm.c
  *
  *-------------------------------------------------------------------------
  */

src/common/unicode/norm_test.c

@@ -5,7 +5,7 @@
  * Portions Copyright (c) 2017-2018, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
- *	  src/common/unicode_norm.c
+ *	  src/common/unicode/norm_test.c
  *
  *-------------------------------------------------------------------------
  */

src/include/storage/sharedfileset.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * src/include/storage/sharedfilespace.h
+ * src/include/storage/sharedfileset.h
  *
  *-------------------------------------------------------------------------
  */