K 10
svn:author
V 3
dim
K 8
svn:date
V 27
2011-12-23T13:50:33.782722Z
K 7
svn:log
V 310
Amend r228822 by not directly adding to CWARNFLAGS, but to an optional
CWARNEXTRA variable, which gets included into the initial CWARNFLAGS
setting.  This makes it easier to override CWARNFLAGS with completely
custom settings (including enabling any disabled warnings).

Reminded by:	arundel
MFC after:	1 week

END