License statement text corrected; compiler warnings caused by Bison 2.41 disabled for MSVC; a few other compiler warnings on 54-bit Windows eliminated by appropriate type cast
Wrong license statements corrected in several files.
Copyright and license statements added in XSD and GLSL files.
Copyright year updated in some files.
Obsolete documentation files removed from DrawResources.
New command line option -c added to DRAWEXE: if it is given, the following arguments are considered as commands to be executed by DRAW after start.
When options -f or -c are used, DRAW exits after completion of the script unless option -i is given.
Option -l is removed as obsolete (not needed anymore due to appearance of option -v).
Option -h (or --help) is added, giving help on command options.
Reporting of unrecognized options added.
On Windows, when run in interactive mode, extended error reporting in case of DLL loading problems activated.
