needed for literals of LEFT_OP and '+'
* src/SDCCicode.c (geniCodeLogic): I must have been braindead when I
introduced RESULT_TYPE_NOPROM
+ (geniCodeMultiply): fixed logic for decision if mul is optimized to
+ left shift
* src/SDCCsymt.c (computeType): op is int; added RESULT_TYPE_OTHER;
limited promotion to int only for '*'
* src/SDCCsymt.h (computeType): op is int, removed RESULT_TYPE_NOPROM