Version bump after 5.0-beta1 release

Change-Id: Iedcf90669847e2c02ac5a17dd799245930075b28
Don't create symlinks in the build tree

This requires an update to the regression tests and/or Jenkins.
Either the regression tests must be run against installed code, or they
must be modified to not depend on the symlinks.  But that would be for
the better, as the present approach (that is removed here) is a hack
that doesn't always work, and since we want to get rid of the symlinks
in the long run, it doesn't make sense to try to make the symlinking
more elaborate.

Change-Id: I90859f1a8c15d8ac3090e31f522aae2af7ba4a67
Avoid build error if CFLAGS contain quotes

Because the BUILD_CFLAGS wasn't escape copyrite.cpp would
fail to compile if CFLAGS contained quotes.

Change-Id: I347512a6574ebbcd0f29d1bc4cd26423f3d323ee