Handle both readline-8 and readline-5 simultaneously

ERP5 SR uses both of them, and without dedicated handling nxdbom breaks as

    AssertionError: (PkgInfo(name='readline', version='8.1', kind='', url='http://ftp.gnu.org/gnu/readline/readline-8.1.tar.gz'), PkgInfo(name='readline', version='5.2', kind='', url='http://ftp.gnu.org/gnu/readline/readline-5.2.tar.gz'))

readline is the only item that ERP5 SR uses with multiple versions.

nxdbom/__init__.py

@@ -283,6 +283,9 @@ def namever(url, failonerr=True): # -> (name, ver)  | None if !failonerr
         # originally from https://sourceforge.net/projects/swig/files/swig/swig-3.0.12/swig-3.0.12.tar.gz/download
         ver = del_tgztail(ver)
         ver = removeprefix(ver, 'v')
+    # XXX hack: in ERP5 SR we use both readline8 and readline-5
+    if name == 'readline' and ver.startswith('5'):
+        name += '5'
     return name, ver
 
 def _namever(url, failonerr):

nxdbom/nxdbom_test.py

@@ -280,6 +280,20 @@ case1("""\
 recipe = plone.recipe.command
 """, '')
 
+# readline 8 and 5 used simultaneously  ->  older one is presented as readline5
+case1("""\
+[readline]
+recipe = slapos.recipe.cmmi
+url = http://ftp.gnu.org/gnu/readline/readline-8.1.tar.gz
+
+[readline5]
+recipe = slapos.recipe.cmmi
+url = http://ftp.gnu.org/gnu/readline/readline-5.2.tar.gz
+""", """\
+readline                     8.1        http://ftp.gnu.org/gnu/readline/readline-8.1.tar.gz
+readline5                    5.2        http://ftp.gnu.org/gnu/readline/readline-5.2.tar.gz
+""")
+
 
 @pytest.mark.parametrize('build,bomok', testv)
 def test_bom_software(tmpdir, build, bomok):