Move replacement of tloadnode of captured variables into pass_1.

During parsing:
+construct capturers;
+mark variables as captured;
+mirror variables to capturer;
+add parent links to capturer which are used to nested access;

During pass_1:
+replace tloadnode of captured variables by series of tsubscript nodes to access required capturer.
Test for initialization of captured variables in "var" section. Little fix.

Problem: initialization of captured variables in "var" section doesn't work. Resulting program fails in runtime with access violation.
Cause: code which initialize local variables is added before code which creates capturer.
Fix: create capturer and then initialize capturer's fields.
Tests. Get addres of captured variable. Capture record and class.