re: misc/31934: toplevel cleandir doesn't honor MKX11=yes

[matthew green <mrg%eterna.com.au@localhost>]

thanks for looking at this.  it bothers me at times.

something to avoid the "make obj" in the x11 build itself would be nice.

either some explicit hacky variable that build.sh or src/Makefile sets
and the x11 Makefile::build target notices, or, simply removing the
obj from the x11 build target... seems better than just this.


.mrg.