Use the bash script in contrib as the basis for a C rewrite using
libalpm. The speedup can go from dozens of seconds to less than one
second.
Colorized output is preserved.
The --graph option generates output that graphviz's `dot' utility will
understand to draw us a graph. Output is written to stdout and it is
left up to the user to pipe the data and determine the output
characteristics.
Signed-off-by: Dave Reisner <d@falconindy.com>
Signed-off-by: Xavier Chantry <chantry.xavier@gmail.com>