In entire meta/classes/ directory, replace shell tests of the form
"if test -? ..." with POSIX tests of the form "if [ -? ...
(From OE-Core rev: 78928016f4cf38cf6751cb089200bf950d07ae93)
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>