Increment PKG_RELEASE from 2 to 3

Signed-off-by: Mathieu Coupe <eagle.pounains@gmail.com>

1.) Fix the handling of XTinyproxy option to avoid syntax error when starting tinyproxy:

example:
Syntax error on line 15
Unable to parse config file. Not starting.

Signed-off-by: Mathieu Coupe <eagle.pounains@gmail.com>

fix Makefile chmod (644)
replace MD5SUM with HASH
add PKG_MIRROR_HASH when PKG_SOURCE_PROTO:=git

(PKG_SOURCE_PROTO:=svn tarballs are not reproducible for now)

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

Signed-off-by: Stefan Weil <sw@weilnetz.de>

Signed-off-by: Steven Barth <steven@midlink.org>

1.) No SysLog possible because keyword misspelled
In tinyproxy.conf and tinyproxy.config the parameter is correct spelled
with small "l"
2.) No logging as non root user
The default is that tinyproxy deamon run as nobody:nogroup, but they have no permission to /var/log/ or any other location.
So touch and change permission for logfile during startup

Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>