Add iswspace, isalpha and isalnum to the standard library.
Add iswspace, isalpha and isalnum to the standard library.

Many read instances want this.

szatkus/haste-compiler,santolucito/haste-compiler,crodjer/haste-compiler,beni55/haste-compiler,nyson/haste-compiler,nyson/haste-compiler,jtojnar/haste-compiler,kranich/haste-compiler,szatkus/haste-compiler,jtojnar/haste-compiler,joelburget/haste-compiler,santolucito/haste-compiler,joelburget/haste-compiler,beni55/haste-compiler,akru/haste-compiler,crodjer/haste-compiler,crodjer/haste-compiler,szatkus/haste-compiler,jtojnar/haste-compiler,akru/haste-compiler,joelburget/haste-compiler,crodjer/haste-compiler,akru/haste-compiler,nyson/haste-compiler,beni55/haste-compiler,akru/haste-compiler,kranich/haste-compiler,santolucito/haste-compiler,kranich/haste-compiler,kranich/haste-compiler,crodjer/haste-compiler,jtojnar/haste-compiler,joelburget/haste-compiler,akru/haste-compiler,beni55/haste-compiler,santolucito/haste-compiler,szatkus/haste-compiler,nyson/haste-compiler