Multiple configfile-related changes - Print current configfile in the output of 'env' (this also makes configfile changeable in runtime via 'setenv') - In 'configfile' commands, print which config file is being used - Fix behavior of existing 'more_conf' - Make load_config() return filename and hash, rather than unconditionally overwrite $conf - Bring back %conf2 into implementation of save_config; it is necessary to be there or 'configfile' is getting lost/deleted in the runtime config Other changes - Add 'set' as alias for 'setenv' - Add unsetenv/unset (opposite of setenv/set) - Do not print unset/undefined values in 'env'

Support separating aliases by space too

Use local implementation of slurp()

Improve accepted command line options This commit enables getopt case sensitivity and adds all command line options/abbreviations typically supported by LDAP clients: -w/-y, -p, -x, -Z/-ZZ, -v