[Rakudo] Cleaned up the use if isxxx() functions in Perl6Str PMC to pass the coding standards tests.
[Rakudo] Cleaned up the use if isxxx() functions in Perl6Str PMC to pass the
coding standards tests.

git-svn-id: ebc29296f9ec9cd27706eb0497c26fede0e190b2@26372 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

teodozjan/rakudo,rakudo/rakudo,azawawi/rakudo,tony-o/rakudo,retupmoca/rakudo,cognominal/rakudo,laben/rakudo,dwarring/rakudo,awwaiid/rakudo,nbrown/rakudo,softmoth/rakudo,softmoth/rakudo,tony-o/rakudo,tony-o/rakudo,samcv/rakudo,salortiz/rakudo,tony-o/deb-rakudodaily,paultcochrane/rakudo,jonathanstowe/rakudo,ugexe/rakudo,ungrim97/rakudo,zhuomingliang/rakudo,cygx/rakudo,usev6/rakudo,Gnouc/rakudo,Leont/rakudo,laben/rakudo,cygx/rakudo,retupmoca/rakudo,Gnouc/rakudo,dankogai/rakudo,rakudo/rakudo,tony-o/deb-rakudodaily,skids/rakudo,laben/rakudo,cognominal/rakudo,dankogai/rakudo,b2gills/rakudo,jonathanstowe/rakudo,MasterDuke17/rakudo,lucasbuchala/rakudo,zostay/rakudo,softmoth/rakudo,nbrown/rakudo,niner/rakudo,awwaiid/rakudo,skids/rakudo,tony-o/rakudo,b2gills/rakudo,dankogai/rakudo,mrgetit/rakudo,sjn/rakudo,dwarring/rakudo,ab5tract/rakudo,rakudo/rakudo,tbrowder/rakudo,tony-o/rakudo,MasterDuke17/rakudo,usev6/rakudo,zhuomingliang/rakudo,lucasbuchala/rakudo,Leont/rakudo,lucasbuchala/rakudo,tony-o/rakudo,LLFourn/rakudo,skids/rakudo,cygx/rakudo,jonathanstowe/rakudo,niner/rakudo,usev6/rakudo,jonathanstowe/rakudo,skids/rakudo,ab5tract/rakudo,b2gills/rakudo,salortiz/rakudo,Gnouc/rakudo,zostay/rakudo,dankogai/rakudo,laben/rakudo,ugexe/rakudo,nbrown/rakudo,tony-o/deb-rakudodaily,azawawi/rakudo,cygx/rakudo,Leont/rakudo,niner/rakudo,zostay/rakudo,pmurias/rakudo,retupmoca/rakudo,salortiz/rakudo,labster/rakudo,sergot/rakudo,samcv/rakudo,teodozjan/rakudo,nbrown/rakudo,azawawi/rakudo,awwaiid/rakudo,pmurias/rakudo,cognominal/rakudo,raydiak/rakudo,azawawi/rakudo,teodozjan/rakudo,raydiak/rakudo,sjn/rakudo,b2gills/rakudo,samcv/rakudo,sjn/rakudo,lucasbuchala/rakudo,awwaiid/rakudo,LLFourn/rakudo,tbrowder/rakudo,ungrim97/rakudo,ugexe/rakudo,tbrowder/rakudo,sergot/rakudo,awwaiid/rakudo,zhuomingliang/rakudo,ugexe/rakudo,samcv/rakudo,dakkar/rakudo,nbrown/rakudo,pmurias/rakudo,ab5tract/rakudo,salortiz/rakudo,rjbs/rakudo,zostay/rakudo,softmoth/rakudo,softmoth/rakudo,lucasbuchala/rakudo,skids/rakudo,sjn/rakudo,sjn/rakudo,tbrowder/rakudo,Gnouc/rakudo,tbrowder/rakudo,ab5tract/rakudo,labster/rakudo,ugexe/rakudo,pmurias/rakudo,paultcochrane/rakudo,raydiak/rakudo,tony-o/deb-rakudodaily,MasterDuke17/rakudo,tony-o/deb-rakudodaily,rakudo/rakudo,MasterDuke17/rakudo,dwarring/rakudo,Leont/rakudo,paultcochrane/rakudo,ab5tract/rakudo,cygx/rakudo,labster/rakudo,rakudo/rakudo,nbrown/rakudo,paultcochrane/rakudo,tony-o/deb-rakudodaily,tbrowder/rakudo,labster/rakudo,rakudo/rakudo,tony-o/deb-rakudodaily,paultcochrane/rakudo,sergot/rakudo,raydiak/rakudo,azawawi/rakudo,dwarring/rakudo,retupmoca/rakudo,LLFourn/rakudo,zhuomingliang/rakudo,LLFourn/rakudo,nunorc/rakudo,jonathanstowe/rakudo,dankogai/rakudo,ungrim97/rakudo,labster/rakudo,salortiz/rakudo,niner/rakudo,nunorc/rakudo,rjbs/rakudo,MasterDuke17/rakudo,MasterDuke17/rakudo,nunorc/rakudo,LLFourn/rakudo,ungrim97/rakudo,cognominal/rakudo,b2gills/rakudo,labster/rakudo,ungrim97/rakudo,sergot/rakudo,nunorc/rakudo,usev6/rakudo,cognominal/rakudo,rjbs/rakudo,teodozjan/rakudo,Gnouc/rakudo,Gnouc/rakudo,salortiz/rakudo,samcv/rakudo,usev6/rakudo