Remove trailing "." from message lines.

Remove trailing "." from message lines.

cs.chromium.org has way fewer hits for
    'message'.*\.',?$ file:gyp
than for
    'message'.*[^\.]',?$ file:gyp

so standardize on the latter.

BUG=none
TEST=less ocd when watching build output
NOTRY=true

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=232166

[Nico, 2013-10-30 00:35:31]

yay / nay? The lines that annoyed me were the ones with a dot after a file
extension, like

[3519/19216] RULE Compile assembly base/simd/convert_rgb_to_yuv_ssse3.asm.

[scottmg, 2013-10-31 17:28:36]

lgtm

[commit-bot: I haz the power, 2013-10-31 17:35:00]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/thakis@chromium.org/51843002/1

[commit-bot: I haz the power, 2013-10-31 18:08:33]

Change committed as 232166