Comment 12 for bug 687864

Yes, plus the debug mode. I have a local script that sets the LD_LIBRARY_PATH and
invokes gdb. Maybe we can also produce a libtool-like script with waf for the
maintainer mode?

I tried to change the prefix for --maintainer but apparently there were some problems
with WAF. the headers and the vapi files are still installed to the default location
/usr/local. If I substitute(with conf.define) DATADIR(the internal one used by waf,
not DATA_DIR defined by us) there will be a misterious python exception, saying
cannot concat a str with a list or something alike.