Updated expected results.

The new case expression pruning optimisation fixes the remaining
unexpected failures in "strict" mode.
Added regression tests for br962 and br963.
Update enumeration test results and add new tests.
Add new enumeration test and update results
Add test for br956 (enum issues)
Remove white space issues
Add more tests for asynchronous case statement synthesis.
Merge branch 'master' into vec4-stack
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.
Update V0.9 test results
Merge branch 'master' into vec4-stack
check_constant_3_v2001: Invalid, removed.
Merge branch 'master' into vec4-stack