neXtaw & Xterm build with neXtaw

Run build.sh to

• configure, make and install nextaw
• configure, make and install xterm with nextaw

Xresources:

For NeXT-style scrollbar, add to your .Xresources/.Xdefaults:

XTerm*scrollBar:                true
XTerm.vt100.scrollbar.background: gray50
XTerm.vt100.scrollbar.foreground: gray20
XTerm.vt100.scrollbar.width: 14