Handle altsep ('/' on Windows) in compiler path for log files.

[chying]

should be
compiler = compiler.replace(os.path.altsep, os.path.sep)?
.replace doesn't change the original copy

[chaoren]

Oops.

[chying]

looks good

test/lldbtest.py

def getLogBasenameForCurrentTest(self, prefix=None):
                      os.environ["LLDB_SESSION_DIRNAME"])
         if not os.path.isdir(dname):
             os.mkdir(dname)
 
         compiler = self.getCompiler()
 
         if compiler[1] == ':':
             compiler = compiler[2:]
+        compiler = compiler.replace(os.path.altsep, os.path.sep)
 
         fname = "{}-{}-{}".format(self.id(), self.getArchitecture(), "_".join(compiler.split(os.path.sep)))
         if len(fname) > 200:
             fname = "{}-{}-{}".format(self.id(), self.getArchitecture(), compiler.split(os.path.sep)[-1])
 
         if prefix is not None:
             fname = "{}-{}".format(prefix, fname)