Small improvement suggestions

[javruben]

• force ncurses to use the dynamic version of libutl by taking out the -static flag and letting it pick which one to use itself. I linked the systems libutil.so into ncurses-5.9/lib.
• The script should be able to test to see if python 2.7 is on a system with the name python2, or python2.7.

[javruben]

More improvement suggestions:

I tried a reinstallation of c9 with tmux installed, and installation still fails. This is the relevant check (line 277):

elif has "tmux" && check_tmux_version tmux; then
echo ':A good version of tmux was found, creating a symlink'

(has "tmux") works, but (check_tmux_version fails) returns false. Two failures cause this:

• One is on line 262:

if [ $(python -c "ok = 1 if 1.7<=$tmux_version else 0; print ok") -eq 1 ]; then

as:

$ python -c "ok = 1 if 1.7<=1.7 else 0; print ok"
File "", line 1
ok = 1 if 1.7<=1.7 else 0; print ok
^
SyntaxError: invalid syntax

because python is python3.

• The other error is on line 254:

if [ ! -x $1 ]; then

This line would work, except line 277 calls

"check_tmux_version tmux"

where "tmux" is not an executable; /usr/bin/tmux is. The correct call is, I guess, "check_tmux_version $(which tmux)".