Switched entrypoint name from mail to _im_main
Switched entrypoint name from mail to _im_main

Allows generated code to be directly linked into apps
with their own main.
damienfir/Halide,gchauras/Halide,ronen/Halide,dougkwan/Halide,ronen/Halide,jiawen/Halide,gchauras/Halide,aam/Halide,kgnk/Halide,ayanazmat/Halide,mcanthony/Halide,kgnk/Halide,smxlong/Halide,psuriana/Halide,fengzhyuan/Halide,ronen/Halide,ronen/Halide,fengzhyuan/Halide,tdenniston/Halide,mikeseven/Halide,damienfir/Halide,adasworks/Halide,tdenniston/Halide,kgnk/Halide,gchauras/Halide,damienfir/Halide,dan-tull/Halide,dan-tull/Halide,lglucin/Halide,delcypher/Halide,ayanazmat/Halide,delcypher/Halide,rodrigob/Halide,dougkwan/Halide,lglucin/Halide,smxlong/Halide,gchauras/Halide,kgnk/Halide,damienfir/Halide,kenkuang1213/Halide,dan-tull/Halide,psuriana/Halide,fengzhyuan/Halide,adasworks/Halide,ayanazmat/Halide,tdenniston/Halide,aam/Halide,tdenniston/Halide,damienfir/Halide,tdenniston/Halide,mcanthony/Halide,ronen/Halide,dougkwan/Halide,fengzhyuan/Halide,jiawen/Halide,rodrigob/Halide,mcanthony/Halide,tdenniston/Halide,kgnk/Halide,adasworks/Halide,adasworks/Halide,dougkwan/Halide,ayanazmat/Halide,lglucin/Halide,adasworks/Halide,lglucin/Halide,mikeseven/Halide,delcypher/Halide,delcypher/Halide,damienfir/Halide,aam/Halide,ronen/Halide,myrtleTree33/Halide,gchauras/Halide,kenkuang1213/Halide,mcanthony/Halide,delcypher/Halide,fengzhyuan/Halide,ronen/Halide,delcypher/Halide,ayanazmat/Halide,myrtleTree33/Halide,dougkwan/Halide,psuriana/Halide,gchauras/Halide,aam/Halide,delcypher/Halide,rodrigob/Halide,jiawen/Halide,myrtleTree33/Halide,jiawen/Halide,ronen/Halide,myrtleTree33/Halide,lglucin/Halide,myrtleTree33/Halide,kgnk/Halide,dan-tull/Halide,mcanthony/Halide,smxlong/Halide,kenkuang1213/Halide,mikeseven/Halide,kenkuang1213/Halide,myrtleTree33/Halide,damienfir/Halide,psuriana/Halide,ayanazmat/Halide,psuriana/Halide,aam/Halide,kenkuang1213/Halide,psuriana/Halide,fengzhyuan/Halide,fengzhyuan/Halide,mikeseven/Halide,damienfir/Halide,aam/Halide,psuriana/Halide,kenkuang1213/Halide,mikeseven/Halide,smxlong/Halide,delcypher/Halide,dan-tull/Halide,adasworks/Halide,aam/Halide,dan-tull/Halide,lglucin/Halide,smxlong/Halide,kgnk/Halide,rodrigob/Halide,mcanthony/Halide,kgnk/Halide,tdenniston/Halide,smxlong/Halide,dan-tull/Halide,lglucin/Halide,myrtleTree33/Halide,mcanthony/Halide,myrtleTree33/Halide,dougkwan/Halide,jiawen/Halide,rodrigob/Halide,jiawen/Halide,smxlong/Halide,kenkuang1213/Halide,mcanthony/Halide,smxlong/Halide,rodrigob/Halide,adasworks/Halide,kenkuang1213/Halide,rodrigob/Halide,dougkwan/Halide,fengzhyuan/Halide,dougkwan/Halide,dan-tull/Halide,jiawen/Halide,ayanazmat/Halide,adasworks/Halide,ayanazmat/Halide,rodrigob/Halide,tdenniston/Halide