Ticket #2242 (improved FISH)

Ticket #2242 (improved FISH)

    fixed configure.ac
    added lib/vfs/mc-vfs/fish/Makefile.am lib/vfs/mc-vfs/fishdef.h
    moved lib/vfs/mc-vfs/fish/README.fish
    fixed lib/vfs/mc-vfs/Makefile.am
    added external scripts in lib/vfs/mc-vfs/fish/
        * ls - get gile list
        * mkdir - make directory
        * rmdir - remove directory
        * unlink - delete file
        * chown - change owner/group of file
        * chmod - change mode of file
        * mv - move file
        * ln - make symlink
        * hardlink - make hardlink
        * send - copy file to target host
        * append - append file to target host (if exists)
        * get - copy file from target host
        * info - return resalts of scan remote host (have: perl, sed, awk, etc)

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
Signed-off-by: Ilia Maslakov <il.smind@gmail.com>
fish.c: optimization and code cleanup
Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
optimization of FISH environment variables.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>