pgindent run for release 9.3

This is the first run of the Perl-based pgindent script.  Also update
pgindent instructions.

src/port/pgcheckdir.c

@@ -68,6 +68,7 @@ pg_check_dir(const char *dir)
 	}
 
 #ifdef WIN32
+
 	/*
 	 * This fix is in mingw cvs (runtime/mingwex/dirent.c rev 1.4), but not in
 	 * released version

src/port/pqsignal.c

@@ -73,4 +73,4 @@ pqsignal(int signo, pqsigfunc func)
 #endif   /* !HAVE_POSIX_SIGNALS */
 }
 
-#endif /* !defined(WIN32) || defined(FRONTEND) */
+#endif   /* !defined(WIN32) || defined(FRONTEND) */

src/port/sprompt.c

@@ -66,7 +66,7 @@ simple_prompt(const char *prompt, int maxlen, bool echo)
 	 * automatically converts text between these code pages when writing to a
 	 * console.  To identify such file descriptors, it calls GetConsoleMode()
 	 * on the underlying HANDLE, which in turn requires GENERIC_READ access on
-	 * the HANDLE.  Opening termout in mode "w+" allows that detection to
+	 * the HANDLE.	Opening termout in mode "w+" allows that detection to
 	 * succeed.  Otherwise, write() would not recognize the descriptor as a
 	 * console, and non-ASCII characters would display incorrectly.
 	 *
@@ -86,11 +86,12 @@ simple_prompt(const char *prompt, int maxlen, bool echo)
 #endif
 	if (!termin || !termout
 #ifdef WIN32
+
 	/*
 	 * Direct console I/O does not work from the MSYS 1.0.10 console.  Writes
 	 * reach nowhere user-visible; reads block indefinitely.  XXX This affects
 	 * most Windows terminal environments, including rxvt, mintty, Cygwin
-	 * xterm, Cygwin sshd, and PowerShell ISE.  Switch to a more-generic test.
+	 * xterm, Cygwin sshd, and PowerShell ISE.	Switch to a more-generic test.
 	 */
 		|| (getenv("OSTYPE") && strcmp(getenv("OSTYPE"), "msys") == 0)
 #endif

src/port/wait_error.c

@@ -80,7 +80,7 @@ wait_result_to_str(int exitstatus)
 	else
 		snprintf(str, sizeof(str),
 				 _("child process exited with unrecognized status %d"),
-				  exitstatus);
+				 exitstatus);
 
 	return pstrdup(str);
 }