Install libtinfo5, the terminfo library.
If that doesn't help, you can try to debug the problem yourself. First, check which libtinfo avrdude is looking for:
ldd arduino-1.7.8-linux64/hardware/tools/avr/bin/avrdudeavrdude_bin | grep libtinfo
On my Ubuntu, I get an answer like this:
libtinfo.so.5 => /lib/i386x86_64-linux-gnu/libtinfo.so.5 (0xb75070000x00007fa74a888000)
Next, see where your libtinfo is installed:
find /lib /usr/lib -name 'libtinfo*'
On my system I get:
/lib/i386x86_64-linux-gnu/libtinfo.so.5.9
/lib/i386x86_64-linux-gnu/libtinfo.so.5.9
Do you have any discrepancy between the two?