This introduces a few new APIs for dealing with strings.
One to split a char * into a char **, another to join a
char ** into a char *, and finally one to free a char **
There is a simple test suite to validate the edge cases
too. No more need to use the horrible strtok_r() API,
or hand-written code for splitting strings.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
(cherry picked from commit 76c1fd33c8093d6a7173a85486e1e6f51a832135)
Signed-off-by: Eric Blake <eblake@redhat.com>
Conflicts:
tests/Makefile.am - several intermediate tests not backported
