Math operations syntax documentation: update int + BigDecimal results (closes #138)
Math operations syntax documentation: update int + BigDecimal results (closes #138)

Per recent discussions on mailing list and experimentation in groovysh
2.4.3, integral types (including BigInteger) with BigDecimal result in
BigDecimal

fpavageau/groovy,apache/groovy,apache/groovy,paulk-asert/incubator-groovy,tkruse/incubator-groovy,shils/incubator-groovy,russel/incubator-groovy,paulk-asert/groovy,shils/groovy,graemerocher/incubator-groovy,armsargis/groovy,tkruse/incubator-groovy,apache/incubator-groovy,eginez/incubator-groovy,fpavageau/groovy,russel/groovy,bsideup/incubator-groovy,fpavageau/groovy,sagarsane/incubator-groovy,russel/groovy,paplorinc/incubator-groovy,paplorinc/incubator-groovy,graemerocher/incubator-groovy,upadhyayap/incubator-groovy,sagarsane/incubator-groovy,sagarsane/incubator-groovy,upadhyayap/incubator-groovy,paulk-asert/incubator-groovy,shils/incubator-groovy,upadhyayap/incubator-groovy,armsargis/groovy,jwagenleitner/groovy,jwagenleitner/incubator-groovy,shils/incubator-groovy,paulk-asert/incubator-groovy,paulk-asert/incubator-groovy,avafanasiev/groovy,fpavageau/groovy,apache/incubator-groovy,alien11689/incubator-groovy,shils/incubator-groovy,paplorinc/incubator-groovy,dpolivaev/groovy,pledbrook/incubator-groovy,traneHead/groovy-core,jwagenleitner/incubator-groovy,russel/incubator-groovy,jwagenleitner/groovy,apache/incubator-groovy,paulk-asert/groovy,paulk-asert/groovy,bsideup/incubator-groovy,upadhyayap/incubator-groovy,eginez/incubator-groovy,eginez/incubator-groovy,jwagenleitner/incubator-groovy,russel/incubator-groovy,apache/incubator-groovy,jwagenleitner/incubator-groovy,dpolivaev/groovy,jwagenleitner/groovy,traneHead/groovy-core,pledbrook/incubator-groovy,russel/groovy,jwagenleitner/groovy,dpolivaev/groovy,paplorinc/incubator-groovy,eginez/incubator-groovy,alien11689/incubator-groovy,armsargis/groovy,shils/groovy,tkruse/incubator-groovy,apache/groovy,avafanasiev/groovy,bsideup/incubator-groovy,graemerocher/incubator-groovy,sagarsane/incubator-groovy,pledbrook/incubator-groovy,traneHead/groovy-core,armsargis/groovy,traneHead/groovy-core,avafanasiev/groovy,shils/groovy,russel/incubator-groovy,pledbrook/incubator-groovy,paulk-asert/groovy,avafanasiev/groovy,russel/groovy,dpolivaev/groovy,alien11689/incubator-groovy,apache/groovy,tkruse/incubator-groovy,alien11689/incubator-groovy,paulk-asert/incubator-groovy,graemerocher/incubator-groovy,shils/groovy,bsideup/incubator-groovy