[dvipdfmx] dvipdfmx fails to find fonts with specified path

[Igor Liferenko]

Dear dvipdfmx developers,

The attached DVI file contains a font with the
specified path: ./myfont
But dvipdfmx fails to find it.

To reproduce the problem do the following steps:

    export PKFONTS=/myfonts
    export TFMFONTS=/myfonts

(notice that there is no `.' in the path - I specifically
don't want current directory to be searched)

    save attached files to current directory

    dvipdfmx test

Result: dvipdfmx produces error.

Compare this situation with the PATH environment
variable: if we call an executable via specific path,
as, e.g., `/dir/prog', then PATH is not consulted.

Please fix this.

Regards,
Igor
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