Skipping the scripts dir is primarily done for 'make install' so that it
does not attempt to install the zsh completion script as we've not yet
found a proper way to do/run that at install time.
By leaving the script dir's Makefile in place, a user can still opt to
run make install manually in there.
Closes #620
bin_SCRIPTS = curl-config
-SUBDIRS = lib src include scripts
+SUBDIRS = lib src include
DIST_SUBDIRS = $(SUBDIRS) tests packages docs
pkgconfigdir = $(libdir)/pkgconfig