SMARTS load/save errors in Indigo.

[AliaksandrDziarkach]

I tested SMARTS load/save using next code:

def test_smarts(smarts_in)
    print(smarts_in)
    qmol = indigo.loadSmarts(smarts_in)
    print(qmol.smarts())

and found next issues:

1. For any SMARTS part without atom name/number added "!#1" which is wrong. "!#1" should not be added.

Next SMARTS converted into incompatible value:

2. "*" converted into "!#1"
3. "[r]" converted into "[x]", "[r0]" and "[r2]" converted into "[!#1;]"
4. "[+0]" converted into "[!#1;]"
5. Wrong processing "not" with aliphatic/aromatic atoms: "[!C]" converted into [!#1;!#6;A]
6. "[!*]" converted into "[#1]"
7. Ring bond disappeared "c@c" converted to "[#6;a][#6;a]"

Next SMARTS caused save errors:

8. "[R]" converted into "[x]", "[R0]" to "[x0]". "[R3]" cause error "SMILES saver: Unknown atom attribute 17"
9. "[v]" cause error "SMILES saver: Unknown atom attribute 12"

Also next bugs:

10. Sometimes directional bonds converted into single: "c/c" to "[#6;a]-[#6;a]". But [#9]/[#6]=[#6]/[#17] not converted.
11. [!C] converted into [!#6;A] which is wrong. Same for other "organic subset" atoms.