Rollup merge of #22916 - rprichard:fmt-num-cleanup, r=alexcrichton
Rollup merge of #22916 - rprichard:fmt-num-cleanup, r=alexcrichton

  * Make num::UpperHex private.  I was unable to determine why this struct
   is public.  The num module itself is not public, and the UpperHex struct
   is not referenced anywhere in the core::fmt module.  (Only the UpperHex
   trait is reference.)  num::LowerHex is not public.

 * Remove the suffix parameters from the macros that generate integral
   display traits.

   The code to print the Debug::fmt suffixes was removed when Show was
   renamed to Debug.  It was an intentional change.  From RFC 0565:

    * Focus on the *runtime* aspects of a type; repeating information such
      as suffixes for integer literals is not generally useful since that
      data is readily available from the type definition.

 * Because Show was renamed to Debug, rename show! to debug!.

graydon/rust,avdi/rust,mahkoh/rust,aidancully/rust,robertg/rust,gifnksm/rust,aneeshusa/rust,krzysz00/rust,jashank/rust,XMPPwocky/rust,andars/rust,AerialX/rust,jroesch/rust,GBGamer/rust,robertg/rust,zubron/rust,cllns/rust,andars/rust,omasanori/rust,GBGamer/rust,mihneadb/rust,XMPPwocky/rust,andars/rust,reem/rust,andars/rust,mvdnes/rust,ebfull/rust,AerialX/rust-rt-minimal,zachwick/rust,TheNeikos/rust,carols10cents/rust,cllns/rust,ebfull/rust,pelmers/rust,AerialX/rust-rt-minimal,ruud-v-a/rust,vhbit/rust,avdi/rust,kwantam/rust,krzysz00/rust,nwin/rust,rprichard/rust,mvdnes/rust,aepsil0n/rust,KokaKiwi/rust,dwillmer/rust,kwantam/rust,jroesch/rust,jashank/rust,andars/rust,AerialX/rust,philyoon/rust,mahkoh/rust,zaeleus/rust,miniupnp/rust,KokaKiwi/rust,dwillmer/rust,cllns/rust,graydon/rust,jroesch/rust,l0kod/rust,aidancully/rust,vhbit/rust,omasanori/rust,sae-bom/rust,krzysz00/rust,aepsil0n/rust,pelmers/rust,dwillmer/rust,miniupnp/rust,victorvde/rust,zubron/rust,mahkoh/rust,zachwick/rust,zaeleus/rust,krzysz00/rust,pshc/rust,AerialX/rust,mdinger/rust,XMPPwocky/rust,vhbit/rust,aepsil0n/rust,AerialX/rust-rt-minimal,mdinger/rust,l0kod/rust,mahkoh/rust,mahkoh/rust,ejjeong/rust,ejjeong/rust,pshc/rust,jroesch/rust,aidancully/rust,dwillmer/rust,AerialX/rust-rt-minimal,GBGamer/rust,zaeleus/rust,victorvde/rust,GBGamer/rust,victorvde/rust,jashank/rust,mdinger/rust,philyoon/rust,seanrivera/rust,jashank/rust,jashank/rust,graydon/rust,ebfull/rust,KokaKiwi/rust,nwin/rust,reem/rust,aneeshusa/rust,mihneadb/rust,vhbit/rust,reem/rust,aneeshusa/rust,philyoon/rust,seanrivera/rust,cllns/rust,gifnksm/rust,l0kod/rust,omasanori/rust,seanrivera/rust,aidancully/rust,omasanori/rust,nwin/rust,victorvde/rust,rohitjoshi/rust,l0kod/rust,omasanori/rust,zachwick/rust,omasanori/rust,GBGamer/rust,miniupnp/rust,dwillmer/rust,l0kod/rust,seanrivera/rust,aneeshusa/rust,victorvde/rust,zachwick/rust,TheNeikos/rust,ebfull/rust,sae-bom/rust,sae-bom/rust,jashank/rust,AerialX/rust,pelmers/rust,mdinger/rust,carols10cents/rust,zubron/rust,dwillmer/rust,jroesch/rust,kwantam/rust,pshc/rust,TheNeikos/rust,mvdnes/rust,mahkoh/rust,zubron/rust,avdi/rust,reem/rust,vhbit/rust,philyoon/rust,ruud-v-a/rust,jroesch/rust,robertg/rust,jroesch/rust,andars/rust,pshc/rust,jashank/rust,gifnksm/rust,ebfull/rust,sae-bom/rust,reem/rust,ebfull/rust,graydon/rust,cllns/rust,KokaKiwi/rust,carols10cents/rust,seanrivera/rust,AerialX/rust,ruud-v-a/rust,mdinger/rust,carols10cents/rust,rprichard/rust,vhbit/rust,zubron/rust,nwin/rust,dwillmer/rust,mihneadb/rust,KokaKiwi/rust,dwillmer/rust,pshc/rust,XMPPwocky/rust,graydon/rust,TheNeikos/rust,XMPPwocky/rust,mdinger/rust,reem/rust,aidancully/rust,ruud-v-a/rust,ruud-v-a/rust,pshc/rust,aepsil0n/rust,rohitjoshi/rust,sae-bom/rust,mvdnes/rust,aneeshusa/rust,pelmers/rust,cllns/rust,mihneadb/rust,AerialX/rust-rt-minimal,GBGamer/rust,carols10cents/rust,ruud-v-a/rust,zachwick/rust,robertg/rust,ejjeong/rust,zaeleus/rust,philyoon/rust,KokaKiwi/rust,zachwick/rust,vhbit/rust,gifnksm/rust,rohitjoshi/rust,rohitjoshi/rust,l0kod/rust,nwin/rust,miniupnp/rust,kwantam/rust,miniupnp/rust,zubron/rust,rohitjoshi/rust,graydon/rust,rprichard/rust,aepsil0n/rust,krzysz00/rust,rohitjoshi/rust,victorvde/rust,carols10cents/rust,kwantam/rust,zaeleus/rust,jashank/rust,robertg/rust,sae-bom/rust,philyoon/rust,GBGamer/rust,l0kod/rust,mvdnes/rust,XMPPwocky/rust,avdi/rust,pelmers/rust,miniupnp/rust,nwin/rust,miniupnp/rust,AerialX/rust,GBGamer/rust,rprichard/rust,mihneadb/rust,zaeleus/rust,rprichard/rust,gifnksm/rust,kwantam/rust,ejjeong/rust,TheNeikos/rust,mihneadb/rust,seanrivera/rust,zubron/rust,AerialX/rust-rt-minimal,pshc/rust,gifnksm/rust,pshc/rust,nwin/rust,mvdnes/rust,ejjeong/rust,avdi/rust,aidancully/rust,nwin/rust,pelmers/rust,miniupnp/rust,krzysz00/rust,aepsil0n/rust,zubron/rust,vhbit/rust,ejjeong/rust,rprichard/rust,avdi/rust,TheNeikos/rust,jroesch/rust,l0kod/rust,robertg/rust,aneeshusa/rust