Dots not allowed in the beginning of labels

[aMelliflousOne]

When working with code compiled by GCC, local labels are usually prefixed by a dot.

FPGRARS mistakenly interprets them as directives.

RARS supports this label format.

Example:

   [error]: Unknown directive '.L0'
   --> exemplo.asm at line 2, column 2
 1  | L.0:
 2  | .L0:
......^ Here
 3  |     .ascii "I am a label