be more verbose when techmap yielded processes
new flags -ignore_miss_func and -ignore_miss_dir for read_liberty
added log_header to miter and expose pass, show cell type for exposed ports
Merge pull request #36 from hansiglaser/master

Various changes merged
Updated ABC to rev fa4404b395f0
Fixed log messages in memory_dff
added tee cmd
Improved error message for options after front-end filename arguments
added while and repeat support to verilog parser
improved ast simplify of const functions
Added tests/simple/repwhile.v
fix functions with no block (but single statement, loop, etc.)
improved const function support
made the generate..endgenrate keywords optional
further improved const function support
Added support for repeat stmt in const functions
Add support for cell arrays
fixed cell array handling of positional arguments
added tests for new verilog features
Updated ABC to 7600ffb9340c