fix Issue 11596 - Internal error: backend/cgcs.c 351
fix Issue 8117 - Cannot initialize struct member without default constructor
Merge pull request #2898 from 9rnsr/fix11596

[REG2.065a] Issue 11596 - Internal error: backend/cgcs.c 351
Merge pull request #2899 from 9rnsr/fix8117

Issue 8117 - Cannot initialize struct member without default constructor
add lexical scope to CodeView debug info
cv lexical scope: add comments, remove unused code