HTTP GM baseline viewer: server should serve files from gm/rebaseline_server dir

HTTP GM baseline viewer: server should serve files from gm/rebaseline_server dir
(SkipBuildbotRuns)

R=jcgregorio@google.com

Committed: https://code.google.com/p/skia/source/detail?r=11583

[epoger, 2013-10-02 18:39:56]

Ready for review.

https://codereview.chromium.org/25774002/diff/1/gm/rebaseline_server/server.py
File gm/rebaseline_server/server.py (right):

https://codereview.chromium.org/25774002/diff/1/gm/rebaseline_server/server.p...
gm/rebaseline_server/server.py:164: static_dir =
os.path.realpath(os.path.join(PARENT_DIRECTORY, 'static'))
Main purpose of this CL: make the server retrieve files from the
gm/rebaseline_server/static directory, regardless of the directory it was run
from.

https://codereview.chromium.org/25774002/diff/1/gm/rebaseline_server/server.p...
gm/rebaseline_server/server.py:169: print ('Attempted do_GET_static() of path
[%s] outside of static dir [%s]'
While I was at it, put in some double-checking to make sure callers cannot
access the filesystem outside of the 'static' subdir.

[jcgregorio, 2013-10-02 19:26:28]

LGTM

[epoger, 2013-10-02 19:27:36]

Committed patchset #1 manually as r11583 (presubmit successful).