* src/SDCCast.h,

* src/SDCCast.h,
* src/SDCCast.c (newAst_),
* src/SDCCicode.h,
* src/SDCCicode.c (ast2iCode, newiCode),
* src/SDCCglobl.h,
* src/SDCC.y (logical_and_expr, logical_or_expr, conditional_expr,
expr, statement, expression_statement, selection_statement,
iteration_statement, expr_opt, jump_statement): foundation for tracking
sequence points
* src/SDCCopt.c (killDeadCode): fixed bug #861580 (needs the sequence
point code too)

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@3064 4a8a32a2-be11-0410-ad9d-d568d2c75423