create-recipe: update re pattern and output

create-recipe: update re pattern and output

In the URL, there may be more than just digits in the version section,
something like xz 5.1.2alpha. Update RE pattern to catch all the string
after package name and before '.tar' in URL as package version.

And error message which has been sent to /dev/null still shows on Ubuntu
12.10 with perl 5.14. Update the way to find source tar file to eraser
the error message.

configure files may rewrite the version section, and that is not necessary.
Test when version section has been set, omit the version value from
configure files.

And tweak for output to bb file.

(From OE-Core rev: 17f09ab713acc814ec0561b1c41fa87d9bf7b83f)

Signed-off-by: Kang Kai <kai.kang@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>