Add missing scripts to misc/scripts

Add new tests to 'simple' and 'misc' test groups

simple & misc
===========
Note that some of commands you can not test with checking with testbench
so those place in misc.

1. passes/cmds/add.cc
Note that here you need to load some existing verilog and add additional
wires, inputs or outputs
2. passes/cmds/blackbox.cc
you could create design with sub module, execute blackbox  and check if
sub module is replaced with blackbox module.
3. passes/cmds/bugpoint.cc

4. passes/cmds/chformal.cc

5. passes/cmds/chtype.cc

6. passes/cmds/connect.cc
Maybe can be covered together with add command

7.passes/cmds/connwrappers.cc

8. passes/cmds/design.cc
missing covering -import option

9.passes/cmds/plugin.cc

10. passes/cmds/rename.cc
rename parts of existing design

11. /passes/cmds/select.cc
Lot of options is not used , so room to improve

12.passes/cmds/setattr.cc
note there are 3 commands to cover here

13. passes/cmds/setundef.cc
setting with one, anyseq, anyconst ...

14. passes/sat/assertpmux.cc
15. passes/sat/async2sync.cc
16. passes/sat/eval.cc
17. passes/sat/freduce.cc
18. passes/sat/miter.cc
run with -assert option
19. passes/sat/sat.cc
many options are not tested
20. passes/sat/sim.cc

21. passes/techmap/flowmap.cc

Add new tests to 'simple' and 'misc' groups;  Add test group for equiv_* commands.

Testing problems:

1. coverage_html/passes/equiv/equiv_make.cc.gcov.html - 164-227 are not
covered;
2. coverage_html/passes/equiv/equiv_add.cc.gcov.html - is not covered
("ERROR: This command must be executed in module context!")

backends
=======
1. backends/firrtl/firrtl.cc – skipped because of error:
 ERROR: Unclocked write port 0 on memory top.ram.
Add model with memory block too, so you can cover line block starting at
line 419

simple
=========
+ 1. passes/techmap/attrmap.cc
There is example in help block create example with
(* keep="true" *) attribute and run example

+ 2. passes/techmap/dff2dffe.cc
execute with  -unmap parameter

+ 3. passes/techmap/dff2dffs.cc

+ 4. passes/techmap/extract.cc
Lot of variations of input parameters is not excersised

? 5. passes/techmap/extract_counter.cc
This is specific to greenpak4 architecture, but idea is to have counter
in design and call this after synth_greenpak

+ 6. passes/techmap/shregmap.cc.
This also seams to be greenpak4 specific, but extracting shift register

misc
========
1. passes/techmap/insbuf.cc

Testing problems:
1. backends/firrtl/firrtl.cc – skipped because of error:
 ERROR: Unclocked write port 0 on memory top.ram.
Add model with memory block too, so you can cover line block starting at
line 419
2.dff2dffe -direct - skipped: ERROR: Found error in internal cell
\dffe.$procdff$47 ($dffe) at
3.insbuf -buf $_BUF_ in out - skipped: ERROR: Found error in internal
cell

Add tests for MISC task list; Add test for write_table command

MISC
=====
Tasks in this group are just generating some output, so no traditional
test bench could be made. Writing output from yosys and checking if
result is expected is advised.

1.http://scratch.clifford.at/coverage_html/passes/tests/test_abcloop.cc.gcov.html
This represents some internal tests for ABC loops
2.
http://scratch.clifford.at/coverage_html/passes/tests/test_cell.cc.gcov.html
note that you need to provide multiple tests in order to cover testing
of all cell types. Also output should be checked if it contain "Fail" or
"Error" in it
3.
http://scratch.clifford.at/coverage_html/passes/cmds/torder.cc.gcov.html
Use some verilog file, do proc and this should display you all cells in
designed ordered. Require multiple different parameters to cover all.
4.http://scratch.clifford.at/coverage_html/passes/cmds/trace.cc.gcov.html
loading verilog file and doing  "trace proc" will create output with
additional logs, not much to check from output to be honest
5.
http://scratch.clifford.at/coverage_html/passes/cmds/write_file.cc.gcov.html
just write to file and check if written output is fine
6.
http://scratch.clifford.at/coverage_html/passes/cmds/stat.cc.gcov.html
if you have liberty cell library files, try it with those specified.
7.
http://scratch.clifford.at/coverage_html/passes/cmds/show.cc.gcov.html
note that you would always need to set -viewer since you do not wish to
call graphwiz.
Need covering of various parameters on a reasonable complicated design
to cover.
8. http://scratch.clifford.at/coverage_html/passes/cmds/scc.cc.gcov.html
detection of logic loops, output needs to be tested in order to check if
loop was detected on not.
9.
http://scratch.clifford.at/coverage_html/passes/cmds/scatter.cc.gcov.html
After doing synth on existing design, just run this step, can do
opt_clean after and there should be lot of temporary and unused wires
removed.
10.
http://scratch.clifford.at/coverage_html/passes/cmds/rename.cc.gcov.html
can load design and rename top modue, output should contain module with
new name
11.
http://scratch.clifford.at/coverage_html/passes/cmds/qwp.cc.gcov.html
Use it on simple design since it takes a while on big ones.
12.
http://scratch.clifford.at/coverage_html/passes/cmds/ltp.cc.gcov.html
Check if returns expected value for your design
13.
http://scratch.clifford.at/coverage_html/passes/cmds/edgetypes.cc.gcov.html
it just outputs report, so not sure what would be valid to check, just
execute for now.
14.
http://scratch.clifford.at/coverage_html/passes/cmds/delete.cc.gcov.html
load existing design and try removing inputs, outputs,... complete
design
15.
http://scratch.clifford.at/coverage_html/passes/cmds/cover.cc.gcov.html
it just prints report, so nothing to check

 add tests for synth_anlogic and 'regression';  Megre commit: "Fix tests according to latest yosys and proper...

Merge commit "Fix tests according to latest yosys and proper gitignore
files".
Make the same changes for 'regression'.