* Portlint and clean up some style bugs
* Replace a hand-rolled configure script with pre/post-configure and
GNU_CONFIGURE (side-effect is to respect CC and CFLAGS in the build
instead of using -O2)
* respect the value of INSTALL_SCRIPT so the installation doesn't bomb out
when we pass in INSTALL_PROGRAM as well
* allow automatic packaging (the MANUAL_PACKAGE_BUILD) seems to be a hold-
over from several years ago before package builds were done separately.
Approved by: jmz (maintainer)
