recipetool: create: do not treat numbers in SCM URLs as versions

Numbers within SCM (e.g. git) URLs are extremely unlikely to be valid
version numbers - more likely they are just part of the name, thus don't
try to extract them and use them as the version - doing so causes pretty
bad behaviour within devtool:

--------- snip ---------
$ devtool add https://github.com/inhedron/libtr50
NOTE: Fetching git://github.com/inhedron/libtr50;protocol=https...
...
NOTE: Using default source tree path .../build/workspace/sources/libtr
...
RecursionError: maximum recursion depth exceeded while calling a Python object
--------- snip ---------

(This was because ${PV} was being substituted into the URL, but PV's
value was being set to include ${SRCPV}, so there was a circular
reference.)

(From OE-Core rev: 3427508b6ce865654f8bf01a6fc04b83c70315d3)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/lib/recipetool/create.py

@@ -336,7 +336,7 @@ def determine_from_url(srcuri):
                 pn = res.group(1).strip().replace('_', '-')
                 pv = res.group(2).strip().replace('_', '.')
 
-        if not pn and not pv:
+        if not pn and not pv and parseres.scheme not in ['git', 'gitsm', 'svn', 'hg']:
             srcfile = os.path.basename(parseres.path.rstrip('/'))
             pn, pv = determine_from_filename(srcfile)
 
@@ -567,7 +567,6 @@ def create_recipe(args):
         if name_pv and not realpv:
             realpv = name_pv
 
-
     if not srcuri:
         lines_before.append('# No information for SRC_URI yet (only an external source tree was specified)')
     lines_before.append('SRC_URI = "%s"' % srcuri)