azy: rename lemon provided by azy-native to azy_lemon

* meta-openembedded/meta-oe/recipes-devtools/lemon/lemon_3.5.4.bb provides almost the same lemon
  but lemon.c in azy sources is a bit modified (and completely reformatted :/)

* rename it to resolve:
  WARNING: The recipe azy-native is trying to install files into a shared area when those files already exist. Those files and their manifest location are:
   /OE/jansa-test/shr-core/tmp-eglibc/sysroots/x86_64-linux/usr/bin/lemon
   Matched in manifest-x86_64-lemon-native

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>