Increase required version of re2c to 0.15.3

The `--no-version` command line argument was introduced with re2c
v0.15.3.
See https://re2c.org/releases/changelog/changelog.html

configure.py

@@ -478,7 +478,7 @@ def shell_escape(str):
 def has_re2c():
     try:
         proc = subprocess.Popen(['re2c', '-V'], stdout=subprocess.PIPE)
-        return int(proc.communicate()[0], 10) >= 1103
+        return int(proc.communicate()[0], 10) >= 1503
     except OSError:
         return False
 if has_re2c():
@@ -489,7 +489,7 @@ def has_re2c():
     n.build(src('depfile_parser.cc'), 're2c', src('depfile_parser.in.cc'))
     n.build(src('lexer.cc'), 're2c', src('lexer.in.cc'))
 else:
-    print("warning: A compatible version of re2c (>= 0.11.3) was not found; "
+    print("warning: A compatible version of re2c (>= 0.15.3) was not found; "
            "changes to src/*.in.cc will not affect your build.")
 n.newline()