Add support for -stdlib=.

Author: kalibera

wllvm/arglistfilter.py

@@ -227,6 +227,7 @@ def __init__(self, inputList, exactMatches={}, patternMatches={}):
             r'^-W(?!l,).*$' : (0, ArgumentListFilter.compileUnaryCallback),
             r'^-f.+$' : (0, ArgumentListFilter.compileUnaryCallback),
             r'^-std=.+$' : (0, ArgumentListFilter.compileUnaryCallback),
+            r'^-stdlib=.+$' : (0, ArgumentListFilter.compileLinkUnaryCallback),
             r'^-mtune=.+$' : (0, ArgumentListFilter.compileUnaryCallback),
             r'^--sysroot=.+$' :  (0, ArgumentListFilter.compileUnaryCallback),
             r'^-print-prog-name=.*$' : (0, ArgumentListFilter.compileUnaryCallback),