Removed --lib option from cl65.

The general approach of cl65 when generating the command lines to be executed is to first put options and the put files. However, this doesn't work well with the --lib option which would rather need to be put when libraries in general are put. I opted to not add this special behavior to cl65 as
* the use case for the --lib option is _VERY_ specific
* cl65 is after all a wrapper for ordinary use cases

doc/cl65.sgml

@@ -94,7 +94,6 @@ Long options:
   --help                        Help (this text)
   --include-dir dir             Set a compiler include directory path
   --ld-args options             Pass options to the linker
-  --lib file                    Link this library
   --lib-path path               Specify a library search path
   --list-targets                List all available targets
   --listing name                Create an assembler listing file