Fix GH-11141: Could not open input file: should be sent to stderr

I grepped for php_printf cases in main/ and sapi/ and converted the
cases which clearly indicate errors to fprintf(stderr, ...), like
suggested in the linked issue.

Author: nielsdos

main/main.c

@@ -2107,7 +2107,7 @@ zend_result php_module_startup(sapi_module_struct *sf, zend_module_entry *additi
 
 	/* start up winsock services */
 	if (WSAStartup(wVersionRequested, &wsaData) != 0) {
-		php_printf("\nwinsock.dll unusable. %d\n", WSAGetLastError());
+		fprintf(stderr, "\nwinsock.dll unusable. %d\n", WSAGetLastError());
 		return FAILURE;
 	}
 	php_win32_signal_ctrl_handler_init();
@@ -2166,7 +2166,7 @@ zend_result php_module_startup(sapi_module_struct *sf, zend_module_entry *additi
 	 * (this uses configuration parameters from php.ini)
 	 */
 	if (php_init_stream_wrappers(module_number) == FAILURE)	{
-		php_printf("PHP:  Unable to initialize stream url wrappers.\n");
+		fprintf(stderr, "PHP:  Unable to initialize stream url wrappers.\n");
 		return FAILURE;
 	}
 
@@ -2180,7 +2180,7 @@ zend_result php_module_startup(sapi_module_struct *sf, zend_module_entry *additi
 
 	/* startup extensions statically compiled in */
 	if (php_register_internal_extensions_func() == FAILURE) {
-		php_printf("Unable to start builtin modules\n");
+		fprintf(stderr, "Unable to start builtin modules\n");
 		return FAILURE;
 	}
 

sapi/cli/php_cli.c

@@ -574,7 +574,7 @@ static zend_result cli_seek_file_begin(zend_file_handle *file_handle, char *scri
 {
 	FILE *fp = VCWD_FOPEN(script_file, "rb");
 	if (!fp) {
-		php_printf("Could not open input file: %s\n", script_file);
+		fprintf(stderr, "Could not open input file: %s\n", script_file);
 		return FAILURE;
 	}
 

sapi/litespeed/lsapi_main.c

@@ -1347,7 +1347,7 @@ static int cli_main( int argc, char * argv[] )
                         php_request_shutdown( NULL );
                     }
                 } else {
-                    php_printf("Could not open input file: %s.\n", *p);
+                    fprintf(stderr, "Could not open input file: %s.\n", *p);
                 }
             } else {
                 cli_usage();