tests: regenerate configure using autoconf patched for AC_PATH_X11 Specifically this patch which does not invoke _AC_PATH_X_XMKMF and _AC_PATH_X_DIRECT internal autoconf routines when cross-compiling: http://git.savannah.gnu.org/gitweb/?p=autoconf.git;a=commitdiff;h=33c3a47c04ab70a4dd54963fe433a171bc03747f Without this, CFLAGS would brokenly have system include paths like -I/usr/include/X11 when cross-compiling e.g. for windows. (And it also resulted in annoying imake crashes for my setup...)