Make asyncdispatch usable when preventing allocations
Make asyncdispatch usable when preventing allocations

- Added a recvInto proc that takes a cstring as argument and reads into
  it instead of returning a newly allocated string. This is pretty
  unnice because of code duplication with recv. Calling recvInto from
  recv is not a good solution because of the additional future that gets
  created.

- Windows version is totally untested

Matt14916/Nim,endragor/Nim,douglas-larocca/Nim,nanoant/Nim,kirbyfan64/Nim,gokr/Nim,endragor/Nim,reactormonk/nim,singularperturbation/Nim,MrJohz/Nim,JCavallo/Nim,russpowers/Nim,gokr/Nim,nafsaka/Nim,reactormonk/nim,nafsaka/Nim,jfhg/Nim,xland/Nim,sferik/Nim,douglas-larocca/Nim,russpowers/Nim,singularperturbation/Nim,endragor/Nim,fredericksilva/Nim,nafsaka/Nim,sferik/Nim,tmm1/Nim,endragor/Nim,sarvex/Nim-lang,mbaulch/Nim,zachaysan/Nim,tulayang/Nim,Dhertz/Nim,Salafit/Nim,sarvex/Nim-lang,jfhg/Nim,gokr/Nim,Salafit/Nim,bvssvni/Nim,kirbyfan64/Nim,gokr/Nim,Matt14916/Nim,nimLuckyBull/Nim,reactormonk/nim,jfhg/Nim,Senketsu/Nim,greyanubis/Nim,MrJohz/Nim,bvssvni/Nim,fredericksilva/Nim,Dhertz/Nim,haiodo/Nim,bvssvni/Nim,reactormonk/nim,Salafit/Nim,JCavallo/Nim,reactormonk/nim,fredericksilva/Nim,gokr/Nim,msmith491/Nim,fmamud/Nim,singularperturbation/Nim,MrJohz/Nim,mbaulch/Nim,bvssvni/Nim,msmith491/Nim,judofyr/Nim,fredericksilva/Nim,jsanjuas/Nim,douglas-larocca/Nim,tmm1/Nim,tulayang/Nim,endragor/Nim,tulayang/Nim,nimLuckyBull/Nim,zachaysan/Nim,nimLuckyBull/Nim,russpowers/Nim,Dhertz/Nim,dom96/Nim,fredericksilva/Nim,dom96/Nim,nimLuckyBull/Nim,Senketsu/Nim,gokr/Nim,douglas-larocca/Nim,jsanjuas/Nim,sarvex/Nim-lang,singularperturbation/Nim,tmm1/Nim,haiodo/Nim,MrJohz/Nim,nanoant/Nim,Senketsu/Nim,Salafit/Nim,JCavallo/Nim,zachaysan/Nim,gokr/Nim,xland/Nim,russpowers/Nim,judofyr/Nim,msmith491/Nim,msmith491/Nim,sarvex/Nim-lang,mbaulch/Nim,nafsaka/Nim,Salafit/Nim,msmith491/Nim,nanoant/Nim,Senketsu/Nim,nanoant/Nim,judofyr/Nim,tulayang/Nim,sarvex/Nim-lang,sferik/Nim,jfhg/Nim,judofyr/Nim,Matt14916/Nim,reactormonk/nim,nafsaka/Nim,msmith491/Nim,fredericksilva/Nim,Senketsu/Nim,douglas-larocca/Nim,russpowers/Nim,jfhg/Nim,russpowers/Nim,sarvex/Nim-lang,jsanjuas/Nim,reactormonk/nim,dom96/Nim,dom96/Nim,Matt14916/Nim,tmm1/Nim,greyanubis/Nim,zachaysan/Nim,kirbyfan64/Nim,dom96/Nim,mbaulch/Nim,jsanjuas/Nim,sarvex/Nim-lang,greyanubis/Nim,singularperturbation/Nim,fredericksilva/Nim,nafsaka/Nim,nimLuckyBull/Nim,bvssvni/Nim,JCavallo/Nim,fmamud/Nim,kirbyfan64/Nim,mbaulch/Nim,Dhertz/Nim,nimLuckyBull/Nim,Dhertz/Nim,fmamud/Nim,tulayang/Nim,MrJohz/Nim,greyanubis/Nim,xland/Nim,nanoant/Nim,zachaysan/Nim,dom96/Nim,kirbyfan64/Nim,jfhg/Nim,judofyr/Nim,gokr/Nim,judofyr/Nim,haiodo/Nim,sferik/Nim,Salafit/Nim,jsanjuas/Nim,tmm1/Nim,MrJohz/Nim,xland/Nim,sferik/Nim,fmamud/Nim,nimLuckyBull/Nim,Matt14916/Nim,msmith491/Nim,fredericksilva/Nim,greyanubis/Nim,xland/Nim,nanoant/Nim,zachaysan/Nim,jfhg/Nim,douglas-larocca/Nim,jsanjuas/Nim,zachaysan/Nim,Senketsu/Nim,tmm1/Nim,haiodo/Nim,fmamud/Nim,fmamud/Nim,sferik/Nim,greyanubis/Nim,singularperturbation/Nim,tulayang/Nim,reactormonk/nim,xland/Nim,JCavallo/Nim,haiodo/Nim,judofyr/Nim,singularperturbation/Nim,Salafit/Nim,Senketsu/Nim,nafsaka/Nim,Dhertz/Nim,greyanubis/Nim,JCavallo/Nim,douglas-larocca/Nim,dom96/Nim,russpowers/Nim,sferik/Nim,Matt14916/Nim,judofyr/Nim,xland/Nim,fmamud/Nim,endragor/Nim,MrJohz/Nim,kirbyfan64/Nim,mbaulch/Nim,nanoant/Nim,kirbyfan64/Nim,tmm1/Nim,Dhertz/Nim,haiodo/Nim,bvssvni/Nim,kirbyfan64/Nim,sferik/Nim,Matt14916/Nim,jsanjuas/Nim,haiodo/Nim,bvssvni/Nim,mbaulch/Nim,douglas-larocca/Nim,JCavallo/Nim,endragor/Nim