check_constant_3_v2001: Variant of check_constant_3 to test
initalization of variables with other variables.
cast_real: Tests casting to real numbers.
string_index: Test for accessing individual characters in a string.
sv_cast_integer: Test for casting to integers of different sizes.
sv_cast_string: Tests casting from strings to vectors.
display_array: Test for dynamic array functions in VPI.
Updated reports.
sv_cast_string: Minor fix and extension.