Log Message:
Rewrite csh scripts in sh, by request of agc. Closes PR 37581.

While here, clean up a lot of pkglint; it appears that the manual
substitutions in the makefile got rolled into several of the patches
at some point. Various problems remain (e.g. the build system runs
/usr/bin/make explicitly in a number of places; plus the manual
substitutions should be tidied away) but this should cover the most
serious ones.

PKGREVISION++.