Add preliminary documentation for the match opcode
Add preliminary documentation for the match opcode

This is basically just taken from Mikes email and wrapped in some
texinfo markup.

What needs to be done is to also the other opcodes that are refered to
like all the sequence opcodes.

IndexBraille/liblouis,IndexBraille/liblouis,IndexBraille/liblouis,hammera/liblouis,hammera/liblouis,hammera/liblouis,liblouis/liblouis,BueVest/liblouis,hammera/liblouis,hammera/liblouis,hammera/liblouis,BueVest/liblouis,liblouis/liblouis,BueVest/liblouis,liblouis/liblouis,BueVest/liblouis,BueVest/liblouis,IndexBraille/liblouis,liblouis/liblouis,liblouis/liblouis,BueVest/liblouis,IndexBraille/liblouis,liblouis/liblouis