'branch_before_07_merge'.

Sprout from master 2000-12-18 16:54:24 UTC Philip Lijnzaad <lijnzaad@sanger.ac.uk> 'added schema diagram in pdf format; see also README'
Cherrypick from master 2000-09-17 15:15:32 UTC Ewan Birney <birney@sanger.ac.uk> 'added makeunique...':
    misc-scripts/golden_path/makeunique.pl
    misc-scripts/golden_path/mergefpcchr.pl
    modules/t/EnsTestDB.pm
    modules/t/mapcontig.dump
    modules/t/mapcontig.t
Cherrypick from master 2001-01-03 16:07:21 UTC Michele Clamp <michele@sanger.ac.uk> 'Large tables for dna':
    scripts/test_genes
    sql/table.sql