renamed ilang "scope error" to "ilang error"
Updated ABC to rev e97a6e1d59b9
Disabled "abc -dff" in "make test" for now (waiting for scorr bugfix in ABC)
Added support for functions returning integer
Merge branch 'master' of github.com:cliffordwolf/yosys
Merge pull request #26 from ahmedirfan1983/btor

Btor
Updated ABC and some related changes
Merge branch 'master' of github.com:cliffordwolf/yosys
Removed double blanks in ABC default command sequences
Implemented read_verilog -defer
Updated ABC
updated default ABC command strings
Added abc -keepff option
Created basic support for function calls in parameter values
Added support for FOR loops in function calls in parameters
Be more conservative with new const-function code
Added liberty frontend
Fixed opt_const handling of double invert with non-1 output width
Added frontend (-f) option to autotest.sh
Correctly convert constants to RTLIL (fixed undef handling)