superenv: allow -W[alp], style arguments to pass through
superenv: allow -W[alp], style arguments to pass through

We already (correctly) allow -Wl, style linker arguments to pass
through; extend this to -Wp, (preprocessor) and -Wa, (assembler).

Fixes Homebrew/homebrew#17252.

muellermartin/dist,alyssais/brew,sjackman/homebrew,MikeMcQuaid/brew,konqui/brew,rwhogg/brew,vitorgalvao/brew,AnastasiaSulyagina/brew,aw1621107/brew,alyssais/brew,tonyg/homebrew,staticfloat/brew,muellermartin/dist,nandub/brew,mahori/brew,gregory-nisbet/brew,jmsundar/brew,bfontaine/brew,pseudocody/brew,konqui/brew,toonetown/homebrew,hanxue/linuxbrew,JCount/brew,rwhogg/brew,pseudocody/brew,jmsundar/brew,mgrimes/brew,mistydemeo/homebrew,palxex/brew,gordonmcshane/homebrew,reitermarkus/brew,Linuxbrew/brew,mahori/brew,Homebrew/brew,mgrimes/brew,Linuxbrew/brew,reitermarkus/brew,bfontaine/brew,sjackman/homebrew,mahori/brew,Homebrew/brew,Homebrew/brew,aw1621107/brew,claui/brew,reelsense/brew,staticfloat/brew,zmwangx/brew,ilovezfs/brew,mistydemeo/homebrew,toonetown/homebrew,aw1621107/brew,sjackman/homebrew,MikeMcQuaid/brew,mahori/brew,maxim-belkin/brew,gregory-nisbet/brew,zmwangx/brew,maxim-belkin/brew,JCount/brew,toonetown/homebrew,amar-laksh/brew_sudo,JCount/brew,nandub/brew,nandub/brew,reitermarkus/brew,sjackman/homebrew,tonyg/homebrew,Linuxbrew/brew,vitorgalvao/brew,ilovezfs/brew,zmwangx/brew,amar-laksh/brew_sudo,EricFromCanada/brew,vitorgalvao/brew,MikeMcQuaid/brew,claui/brew,DomT4/brew,EricFromCanada/brew,bfontaine/brew,hanxue/linuxbrew,tonyg/homebrew,hanxue/linuxbrew,Linuxbrew/brew,palxex/brew,EricFromCanada/brew,pseudocody/brew,reitermarkus/brew,DomT4/brew,gordonmcshane/homebrew,reelsense/brew,AnastasiaSulyagina/brew,alyssais/brew,konqui/brew,mgrimes/brew,reelsense/brew,gordonmcshane/homebrew,staticfloat/brew,palxex/brew,vitorgalvao/brew,mistydemeo/homebrew,maxim-belkin/brew,AnastasiaSulyagina/brew,rwhogg/brew,DomT4/brew,muellermartin/dist,konqui/brew,jmsundar/brew,nandub/brew,DomT4/brew,ilovezfs/brew,MikeMcQuaid/brew,claui/brew,Homebrew/brew,JCount/brew,EricFromCanada/brew,gregory-nisbet/brew,claui/brew,amar-laksh/brew_sudo