bitbake: ConfHandler: Don't strip leading spaces
Fixed:
- Add the following lines to conf/local.conf:
FOO = "BAR1"
FOO_append = "\
BAR2"
$ bitbake -e | grep '^FOO'
FOO="BAR1BAR2"
The leading spaces in the second line have been removed.
- But if add the previous two lines to base.bbclass:
$ bitbake -e | grep '^FOO'
FOO="BAR1 BAR2"
The leading spaces in the second line are preserved, this is inconsistent, now
fix ConfHandler to preserve leading spaces.
[YOCTO #12380]
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>