ports/186957: waf-1.7.15 and mpv-0.3.3_1

[_root_]

>Number:         186957
>Category:       ports
>Synopsis:       waf-1.7.15 and mpv-0.3.3_1
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Feb 22 09:50:00 UTC 2014
>Closed-Date:
>Last-Modified:
>Originator:     _root_
>Release:        10 -RELEASE
>Organization:
>Environment:
FreeBSD AVALON 10.0-RELEASE FreeBSD 10.0-RELEASE #0 r260789: Thu Jan 16 22:34:59 UTC 2014     root at snap.freebsd.org:/usr/obj/usr/src/sys/GENERIC  amd64
>Description:
I am trying to compile your port via portmaster `portmaster multimedia/mpv` but I get an error regarding waf:

`=> SHA256 Checksum mismatch for waf-1.7.15.
===>  Refetch for 1 more times files: waf-1.7.15 
===>  License GPLv2 accepted by the user
===>  Found saved configuration for mpv-0.3.3_1,1
===>   mpv-0.3.3_1,1 depends on file: /usr/local/sbin/pkg - found
=> waf-1.7.15 doesn't seem to exist in /usr/ports/distfiles/.
=> Attempting to fetch https://waf.googlecode.com/files/waf-1.7.15
fetch: https://waf.googlecode.com/files/waf-1.7.15: Forbidden
=> Attempting to fetch ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/distfiles/waf-1.7.15
fetch: ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/distfiles/waf-1.7.15: File unavailable (e.g., file not found, no access)
=> Couldn't fetch it - please try to retrieve this
=> port manually into /usr/ports/distfiles/ and try again.
*** Error code 1

Stop.
make[2]: stopped in /usr/ports/multimedia/mpv
*** Error code 1

Stop.
make[1]: stopped in /usr/ports/multimedia/mpv
*** Error code 1

Stop.
make: stopped in /usr/ports/multimedia/mpv`

as I am in collage library,I can't access the google code due to  certificate issue.
But the regular method of downloading and placing the file in disfiles doesn't work here:
First what is waf? a file a directory? is it a port? does it have an extension like bzip or tar.gz?
I search the google code and found `waf-1.7.15.tar.bz2` . I downloaded and placed it in distfiles but no luck. extract it and leave it as a folder again no joy. even tried to remove the etension and again no luck.
Please look into this matter.
thanks
>How-To-Repeat:
portmaster multimedia/mpv
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: