Scripting: don't call lua_gc() after Lua script run.
Scripting: don't call lua_gc() after Lua script run.

Calling lua_gc() after every script execution is too expensive, and
apparently does not make the execution smoother: the same peak latency
was measured before and after the commit.

This change accounts for scripts execution speedup in the order of 10%.

shining-yang/redis,jingjidejuren/redis,nnog/redis,Aliceljm1/redis,j0hnma/hszredis,aim-for-better/redis,duanx/redis,wbailey5/redis,gilala/redis,PKRoma/redis,YongMan/redis,colstrom/redis,supasate/redis,CodeJuan/redis,zhcy/redis,alenslan/redis,xujunhai1991/redis,alenslan/redis,huyuezheng/redis,atreeyang/redis,nnog/redis,cloudrain21/redis,Sciumo/redis,mengzhejin/RedisStudy,ctripcorp/redis,ErikDubbelboer/redis,Markgorden/redis,YongMan/redis,mengzhejin/RedisStudy,saisai/redis,ErikDubbelboer/redis,mumingv/redis,kensou97/redis,rogerlz/redis,Aaron1992/redis,xujunhai1991/redis,valdsJohn/redis,ctripcorp/redis,netroby/redis,saisai/redis,hawkchch/redis,colstrom/redis,kmiku7/redis,citusdata/redis,xujunhai1991/redis,charsyam/redis,healerkx/redis,pedigree/redis,hawkchch/redis,Markgorden/redis,j0hnma/szredis,ouyangkongtong/redis,alenslan/redis,nuxeh/redis,jackyan/redis,gilala/hredis,dreamquster/redis,shining-yang/redis,honestme/redis,tjschuck/redis,allengaller/redis,devaos/redis,seppo0010/redis,takeshineshiro/redis,weizijun/redis,OmarQunsul/graph-redis,mcanthony/redis,shining-yang/redis,tellapart/redis,Sciumo/redis,190235047/redis,ipmobiletech/redis,PKRoma/redis,taoguan/redis,Aliceljm1/redis,clamoriniere1A/redis,takeshineshiro/redis,qiyang0221/redis,valdsJohn/redis,brg-liuwei/redis,Soledad89/redis,j0hnma/hszredis,rouzier/redis,HeartSaVioR/redis,modulexcite/redis,kmiku7/redis,190235047/redis,programmecat/redis,Soledad89/redis,Soledad89/redis,charsyam/redis,abhiklodh/redis,hornen/redis,YuanZhewei/redis,YuraLukashik/redis,Wangyao14cyy/redis,cloudrain21/redis,zczhuohuo/redis,PKRoma/redis,GrimDerp/redis,j0hnma/hszredis,programmecat/redis,RepmujNetsik/redis,wangyikai/redis,iandyh/redis,weizijun/redis,gilala/hredis,Markgorden/redis,mverrilli/redis,huyuezheng/redis,soloestoy/redis,soloestoy/redis,4396/redis,itamarhaber/redis,aim-for-better/redis,narma/redis,takeshineshiro/redis,Sciumo/redis,wenxueliu/redis_comment,190235047/redis,Aaron1992/redis,programmecat/redis,flashbuckets/redis,universsky/redis,josiahcarlson/redis,zhcy/redis,CodeJuan/redis,kaushik94/redis,gilala/bjredis,wenxueliu/redis_comment,sunheehnus/redis,fengshao0907/redis,StevenTsai/redis,itamarhaber/redis,mattsta/redis,seppo0010/rlite-server,Markgorden/redis,spinlock/redis,programmecat/redis,yuhc/redis-benchmark-enhanced,universsky/redis,badboy/redis,hedisdb/hedis,simplestbest/redis,HeartSaVioR/redis,twskipper/redis,iandyh/redis,mengzhejin/RedisStudy,ErikDubbelboer/redis,AALEKH/redis,xuguruogu/redis,YuraLukashik/redis,fengshao0907/redis,z-fork/redis,arijitvt/redis,ytjiang/redis,ofirluzon/redis,YuanZhewei/redis,mengyou0304/redis,MOON-CLJ/redis,zczhuohuo/redis,qiyang0221/redis,gaoxianglong/redis,gilala/hbjredis,harrisonfeng/redis,GitHubMota/redis,mingyaaaa/redis,dayuoba/redis,NBSW/redis,antirez/redis,holstvoogd/redis,dayuoba/redis,xuguruogu/redis,neomantra/redis,StevenTsai/redis,timothyohare/3rdPartySrc-redis,mengyou0304/redis,harrisonfeng/redis,AALEKH/redis,honestme/redis,Wangyao14cyy/redis,Wangyao14cyy/redis,MasahikoSawada/redis,yossigo/redis,netroby/redis,JoeWoo/redis,dreamquster/redis,supasate/redis,seandsky/redis,YuanZhewei/redis,seppo0010/redis,xlzhan/redis,zczhuohuo/redis,NBSW/redis,rogerlz/redis,charsyam/redis,neomantra/redis,duanx/redis,ouyangkongtong/redis,riyan8250/redis,a-pavlov/redis,zhiliaoniu/redis,charsyam/redis,xujunhai1991/redis,csuhawk/redis,gilala/redis,sunheehnus/redis,netroby/redis,soveran/redis,YuraLukashik/redis,tellapart/redis,narma/redis,wprice/redis,SyntaxStacks/redis,soveran/redis,tjschuck/redis,GrimDerp/redis,yossigo/redis,blackmady/redis,janekmi/redis,rogerlz/redis,wenxueliu/redis_comment,simplestbest/redis,allengaller/redis,guker/redis,universsky/redis,itugs/redis,hedisdb/hedis,kaushik94/redis,soloestoy/redis,mumingv/redis,gilala/hredis,ytjiang/redis,timothyohare/3rdPartySrc-redis,tjschuck/redis,NBSW/redis,spinlock/redis,wbailey5/redis,mattsta/redis,timothyohare/3rdPartySrc-redis,riyan8250/redis,seppo0010/rlite-server,wbailey5/redis,clamoriniere1A/redis,zhiliaoniu/redis,YuanZhewei/redis,jackyan/redis,shreesundara/redis,Aliceljm1/redis,simplestbest/redis,qiyang0221/redis,roth1002/redis,rogerchina/redis,supasate/redis,oranagra/redis,ytjiang/redis,zguangyu/redis,wangyikai/redis,francischan714/redis,pedigree/redis,soveran/redis,jingjidejuren/redis,davidradunz/redis,devaos/redis,wbailey5/redis,harrisonfeng/redis,atreeyang/redis,mcanthony/redis,yossigo/redis,SummonY/redis,josiahcarlson/redis,MOON-CLJ/redis,modulexcite/redis,pkdevbox/redis,AALEKH/redis,holstvoogd/redis,PradheepShrinivasan/redis,GitHubMota/redis,wprice/redis,4396/redis,SyntaxStacks/redis,hornen/redis,weizijun/redis,arijitvt/redis,gilala/hbjredis,csuhawk/redis,gaoxianglong/redis,july2993/redis,brg-liuwei/redis,holstvoogd/redis,saisai/redis,RepmujNetsik/redis,j0hnma/hszredis,h0x91b/redis,aim-for-better/redis,izhoujie/redis,Aliceljm1/redis,healerkx/redis,thomasdarimont/redis,ctripcorp/redis,pmem/redis,wujf/redis,pcarrier/redis,ofirluzon/redis,LongXQ/redis,hgl888/redis,tellapart/redis,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edis,taoguan/redis,blackmady/redis,YongMan/redis,gaoxianglong/redis,SummonY/redis,hawkchch/redis,oranagra/redis,LongXQ/redis,antirez/redis,badboy/redis,AplayER/redis,tanghaodong25/redis,guker/redis,mgk/redis,MasahikoSawada/redis,h0x91b/redis,vincent-vivian-liu/redis,ton31337/redis,cusspvz/redis,PKRoma/redis,arijitvt/redis,antirez/redis,mingyaaaa/redis,iandyh/redis,xlzhan/redis,davidradunz/redis,july2993/redis,francischan714/redis,neomantra/redis,j0hnma/szredis,MOON-CLJ/redis,dayuoba/redis,mumingv/redis,rogerchina/redis,hgl888/redis,abhiklodh/redis,janekmi/redis