suppress 'unknown object name' messages

by using the -lto option on gcc and windows,
 many messages like above are produced.
removed by ignoring .ltrans.o files

Author: JojoS62

tools/memap.py

@@ -113,6 +113,7 @@ class _GccParser(_Parser):
     )
     RE_STD_SECTION = re.compile(r'^\s+.*0x(\w{8,16})\s+0x(\w+)\s(.+)$')
     RE_FILL_SECTION = re.compile(r'^\s*\*fill\*\s+0x(\w{8,16})\s+0x(\w+).*$')
+    RE_TRANS_FILE = re.compile(r'^(.+\/|.+\.ltrans.o(bj)?)$')
     OBJECT_EXTENSIONS = (".o", ".obj")
 
     ALL_SECTIONS = (
@@ -148,6 +149,9 @@ def parse_object_name(self, line):
 
         return value - an object file name
         """
+        if re.match(self.RE_TRANS_FILE, line):
+            return '[misc]'
+
         test_re_mbed_os_name = re.match(self.RE_OBJECT_FILE, line)
 
         if test_re_mbed_os_name: