automatically adjust IPOPT_LIB for 64-bit case
updated the Ipopt path
Merge pull request #7 from joonro/patch-1

automatically adjust IPOPT_LIB for 64-bit case
return constraint multipliers when nlp is solved
Temporarily disable return of lambda
correct comment style
Add n and m fields to problem struct
Use new field of problem to allocate and return constraint multiplier array
Calculate and display constraint multipliers in example file
Resolve silly conflict in setup.py