* autotools: only add increased warning flags if --enable-dev is set
* configure.ac: update to current autotools versions
* Mutex.cxx: fix invalid stack access in DEBUG_MUTEX case
* test base: use unpredictable temporary directory for testing
* test base: try from a list of X11 programs for testing, otherwise fail
* global: python scripts: adjust coding style to Python PIP
* ILogger: fix warn() wrapper to return actual m_warn, no m_err
OBS-URL: https://build.opensuse.org/package/show/filesystems/xwmfs?expand=0&rev=16