#47 many lib version issues

[José Moya]

Many people has submitted version issues. Some version
issues affect even the user compiled files. I've had to

mkdir /lib2
cd /usr/i386-glibc21-linux;
for A in *; sln $pwd/$A /lib2
cd /mnt/fire/lib
for A in *; sln $pwd/$A /lib2
sln /lib2 lib

(i.e. replace actual /lib with a /lib+/usr/i386-glibc21-linux)
to make it work.)

~/john-1.6 needs glibc_2.3; many GLIBCs are supported
by /lib/libc-2.2.5.o, but 2.3 is not one of these.