#533 Update indenter to support indent of nested UVM macros

[StevenAZ]

Found in 2.1.5

Discuss the possibility of indenting uvm macros that require indenting changes. Currently no indenting changes occur, but as shown in the code below, uvm_object_utils_begin/end should really change the indent depth.

~~~~~~~
`uvm_object_utils_begin (lab_tx_base)
`uvm_field_int (reset_n , UVM_NOCOMPARE)
`uvm_field_int (load_en , UVM_NOCOMPARE)
`uvm_field_int (read_pointer , UVM_NOCOMPARE)
`uvm_field_int (write_pointer, UVM_NOCOMPARE)
`uvm_object_utils_end

[StevenAZ]

Found a list of UVM begin / end macros in case we get this far:

    // Begin keywords
    fUvmMacroBegin = new HashSet<String>();
    fUvmMacroBegin.add("\`uvm_field_utils_begin");
    fUvmMacroBegin.add("\`uvm_object_utils_begin");
    fUvmMacroBegin.add("\`uvm_object_param_utils_begin");
    fUvmMacroBegin.add("\`uvm_component_utils_begin");
    fUvmMacroBegin.add("\`uvm_component_param_utils_begin");
    // End keywords
    fUvmMacroEnd = new HashSet<String>();
    fUvmMacroEnd.add("\`uvm_field_utils_end");
    fUvmMacroEnd.add("\`uvm_object_utils_end");
    fUvmMacroEnd.add("\`uvm_object_param_utils_end");
    fUvmMacroEnd.add("\`uvm_component_utils_end");
    fUvmMacroEnd.add("\`uvm_component_param_utils_end");