Drop the Makefile patch and instead let TkImg perform the install as it wants.
With the right options in CONFIGURE_ARGS and some other Makefile vars,
this gives a nice result, with all the lib files in one place and without
a lot of directories and pkgIndex.tcl files.
Include files are now installed in ${LOCALBASE}/include/tkimg,
instead of ${LOCALBASE}/include.
The *Config.sh files are now installed in ${LOCALBASE}/lib/tcl/tkimg,
instead of ${LOCALBASE}/lib.
Man pages are now installed.
Tests can now be run without the package having to install itself.
No longer need SHARED_LIBS.
Take Maintainership.
OK sthen@
9c9b93792b