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

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
  *
  *-------------------------------------------------------------------------
  */

src/include/utils/evtcache.h

@@ -1,13 +1,13 @@
 /*-------------------------------------------------------------------------
  *
- * evtcache.c
+ * evtcache.h
  *	  Special-purpose cache for event trigger data.
  *
  * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  src/backend/utils/cache/evtcache.c
+ *	  src/include/utils/evtcache.h
  *
  *-------------------------------------------------------------------------
  */

src/interfaces/ecpg/include/sqlda-compat.h

@@ -1,5 +1,5 @@
 /*
- * pgsql/src/interfaces/ecpg/include/sqlda-infx-compat.h
+ * src/interfaces/ecpg/include/sqlda-compat.h
  */
 
 #ifndef ECPG_SQLDA_COMPAT_H