oratcl SvnCode

continue the code separation.

remove some ifdef'd code leftover from the split into separate file.

continue to split out various oratcl functions into separate source files.

Break the large 'oratcl.c' into smaller component source modules to make
management and revision control easier.

fix logonhandle naming convention

update docs to match version number

add additional -sysdba, -sysoper and -sysasm options to the 'oralogon' command

documentation updates

ChangeLog

initialize some variables