Running tests without installing Zsh

["Andrej Borsenkow" <Andrej.Borsenkow@xxxxxxxxxxxxxx>]

If Zsh is compiled with dynamic loading, it is near to impossible to run
tests without installing Zsh (at least, Zsh modules and, probably,
functions). Even setting module_path to $srcdir/Src/*(/) does not help,
because Zsh loads modules as zsh/<module> - and we do not have zsh
subdirectories in this case.

One possibility is to use separate directory for compiled binaries. Bin/zsh
for zsh itself and Bin/Modules for modules with the same structure as in
installation directory. Then in ztst.zsh (or, possibly, as parameter) use

module_path=($PWD/../Bin/Modules)

and in Test/Makefile

check:
	$PWD/../Bin/zsh -f ztst.zsh

Of course, if any test runs as interactive, it will pick up wrong module
anyway as we cannot override module_path at Zsh startup.

Is any module loaded at non-interactive shell startup?

/andrej