[lldb] Skip TestExecutableFirst.test_executable_is_first_before_run on ELF

ELF does not have a hard distinction between shared libraries (and
position-independent) executables. It is possible to create a shared
library that will also be executable.

Author: labath

lldb/test/API/functionalities/executable_first/TestExecutableFirst.py

@@ -10,6 +10,9 @@
 class TestExecutableIsFirst(TestBase):
     NO_DEBUG_INFO_TESTCASE = True
 
+    # ELF does not have a hard distinction between shared libraries and
+    # (position-independent) executables
+    @skipIf(oslist=no_match(lldbplatformutil.getDarwinOSTriples()+["windows"]))
     def test_executable_is_first_before_run(self):
         self.build()