base: Avoid circular references to our own scripts

We'd like to intercept git calls but we don't want circular references
and HOSTTOOLS currently sets them up. Tweak to avoid them.

(From OE-Core rev: 52c37e133fa55846aca2248ffcf3a10648dbb8d7)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/base.bbclass

@@ -115,6 +115,10 @@ def setup_hosttools_dir(dest, toolsvar, d, fatal=True):
     tools = d.getVar(toolsvar).split()
     origbbenv = d.getVar("BB_ORIGENV", False)
     path = origbbenv.getVar("PATH")
+    # Need to ignore our own scripts directories to avoid circular links
+    for p in path.split(":"):
+        if p.endswith("/scripts"):
+            path = path.replace(p, "/ignoreme")
     bb.utils.mkdirhier(dest)
     notfound = []
     for tool in tools: