merge from main

#define ISSUE_1796_replace_shl_o                             /* FhG: replace shl_ro by overflow-free alternatives - BE*/

#define ISSUE_1799_replace_L_shr_o                           /* FhG: replace by non-overflow-alternative - BE */

#define ISSUE_1836_replace_overflow_libcom                   /* FhG: replace overflow operators by non-overflow-alternatives - BE */

#define ISSUE_1866_replace_overflow_libdec                    /* FhG: BE - Replace BASOPoverflow operators all over the lib_dec module if Overflow result is not used */

#define NONBE_FIX_TCX5_INTERLEAVING_FOR_FS_IN_UNEQUAL_FS_OUT /* FhG: apply correct TCX5 grouping/interleaving when input_fs != output_fs */