Update distinfo and unbreak this port

- While I'm here, add USES=php

Content of tarballs are unchanged (checked against [1]).

=> File-1.4.1.tgz doesn't seem to exist in /usr/ports/distfiles/PEAR.
=> Attempting to fetch http://pear.php.net/get/File-1.4.1.tgz
fetch: http://pear.php.net/get/File-1.4.1.tgz: size mismatch: expected 8164, actual 8275

Reference:	https://people.FreeBSD.org/~sunpoet/checksum/File-1.4.1.tgz [1]
Approved by:	portmgr (blanket)

sysutils/pear-File/Makefile

@@ -9,7 +9,7 @@ CATEGORIES=	sysutils www pear
 MAINTAINER=	joneum@FreeBSD.org
 COMMENT=	PEAR common file and directory routines
 
-USES=		pear
+USES=		pear php
 USE_PHP=	pcre
 
 .include <bsd.port.mk>

sysutils/pear-File/distinfo

@@ -1,2 +1,3 @@
-SHA256 (PEAR/File-1.4.1.tgz) = f9b7e03dced7c7b6575531fbc73bc479ae4849d80c764862eeeec9b90f74a4d0
-SIZE (PEAR/File-1.4.1.tgz) = 8164
+TIMESTAMP = 1497163349
+SHA256 (PEAR/File-1.4.1.tgz) = 6020750718d124346f41d23198e39fc8b1e84a1b28deaee33eb0256859fcfee2
+SIZE (PEAR/File-1.4.1.tgz) = 8275