Some minor changes to automake variables.
Pseudo code for handling environment variables, etc.
Added [u]intmax_t for VAXC.
Removed unused memory zone stuff.
Fix up module header and add info messages.
Added beginning support for search command as well as reorganized main
interpeter loop.  Now we can chain one command to another.
Making teco build statically for now.  Once the API is available I'll
change this.
Added some further search related code, and a couple comments for $$.
Fix rather glaring and long unfixed bug in number handler.
Base getfl support for EI command.  More to follow...
Couple small changes to cope with implementation of EI command.
Added getfl to IO_SUPPORT.
Finally completed conditional support.
Added iteration support.
Add "I" command support.
Fixed bug in handling ")" where values before "(...)" where "forgotten".
Fixed more silly bugs and a bit of tidy up.
Re-wrote the number getter '\'.  Also adjusted the data types being
used to store local copies of n.  This should always be intmax_t.
Fixed bug in handling 0L.