build system changes, manual in the trunk

This version includes:

• refreshed bfstrip, with optional linebreak insertion in the file (wrap to width using --with-line-width=n while calling ./configure).
• manual in the trunk
• reorganized microcode for bfasm
• smarter bfmake (detecing the installed bfasm version).
• fcpush, fcpop, fcpsh aliases.
• lib-bfm stub changes
• bfvm jamming protector.
• fixed a single memory leak regarding effective
• fixed two buffer overflows
• fix the double-nocopy switch