Purpose: to contain discussion relating to an installation
directory structure that is recommended for people writing tcl extensions
or applications.


[LV] Jump right in and add info as you see needed:


 --prefix      /usr/local          default location for tcl pieces
                         /include  header file(s) needed when writing
                                   code against a library
                         /lib      location where Tcl only extensions
                                   are installed
                         /lib/extension.version.level
                                   location for pkgIndex.tcl files, tcl
                                   files, etc.
                         /bin      location where Tcl only applications
                                   are installed

 --exec-prefix /usr/local          default location for binary parts of tcl
                         /lib      location where binary extensions
                                   and their pkgIndex.tcl are installed
                         /lib/extension.version.level
                                   location for pkgIndex.tcl files, .so 
                                   files, etc.
                         /bin      location where binary applications
                                   are installed