#2 Should accept unit types both with and without leading zeros

[Sergey S. Fukanchik]

E.g. should accept both
M48
INCH
T64C0.126
...
and
M48
INCH,LZ
T64C0.126

currently the following code:

        if (strncmp(strNCDrill.c_str(), "INCH,", strlen("INCH,")) == 0)

accepts only commands with something containing comma.

[Sergey S. Fukanchik]

Proposed patch.

[Stepan Dyatkovsky]

Fixed in r8