header (C) fixes
Automated rebranding to Oracle copyright/license strings via filemuncher
*: s/RT_\(BEGIN|END\)_DECLS/RT_C_DECLS_\1/g
Misc: __BEGIN_DECLS -> RT_BEGIN_DECLS; __END_DECLS -> RT_END_DECLS.
Renamed src/recompiler_new to src/recompiler.
src/recompiler: renaming in progress.
rebranding