Use script name instead of project name for xref and dot files

Is your feature request related to a problem? Please describe.

When building multiple package bundle (MERGE) pyinstaller overwrites the xref and dot files, making it harder on the user/developer to analyze build problems.

Describe the solution you'd like

PyInstaller should use the pattern build/{project}/xref-{script}.html instead of build/{project}/xref-{project}.html and do the same for the dot file so they don't get overwritten by Analysis calls.

Describe alternatives you've considered

Manually rename xref and dot files after each Analysis step.

Additional context

The following spec file will create sample files in the current directory and use MERGE to merge dependencies. It will also make a copy and print out the crc32 checksum of the xref files generated during the build.

Run with pyinstaller --log-level=WARN --noconfirm --noupx complex.spec for clarity/speed.

# -*- mode: python ; coding: utf-8 -*-
from PyInstaller.config import CONF
import binascii
import os

with open("complex.py", "w") as f:
    f.write("""
from jsonschema import Draft7Validator
print(Draft7Validator)
""")

with open("simple.py", "w") as f:
    f.write("""
import os
print("current working directory is", os.getcwd())
""")

block_cipher = None

a1 = Analysis(['complex.py'],
             pathex=['.'],
             binaries=[],
             datas=[],
             hiddenimports=[],
             hookspath=[],
             runtime_hooks=[],
             excludes=[],
             win_no_prefer_redirects=False,
             win_private_assemblies=False,
             cipher=block_cipher,
             noarchive=False)

with open(CONF['xref-file'], "rb") as f:
    print(f"{CONF['xref-file']} crc32:", binascii.crc32(f.read()) & 0xffffffff)
import shutil
shutil.copy(CONF['xref-file'], CONF['xref-file'] + "_complex.html")

a2 = Analysis(['simple.py'],
             pathex=['C:\\Code\\xrefbug'],
             binaries=[],
             datas=[],
             hiddenimports=[],
             hookspath=[],
             runtime_hooks=[],
             excludes=[],
             win_no_prefer_redirects=False,
             win_private_assemblies=False,
             cipher=block_cipher,
             noarchive=False)

with open(CONF['xref-file'], "rb") as f:
    print(f"{CONF['xref-file']} crc32:", binascii.crc32(f.read()) & 0xffffffff)
shutil.copy(CONF['xref-file'], CONF['xref-file'] + "_simple.html")

MERGE(
    (a1, 'complex', 'complex'),
    (a2, 'simple', 'simple')
)

pyz1 = PYZ(a1.pure, a1.zipped_data,
             cipher=block_cipher)
exe1 = EXE(pyz1,
          a1.scripts,
          [],
          exclude_binaries=True,
          name='complex',
          debug=False,
          bootloader_ignore_signals=False,
          strip=False,
          upx=False,
          console=True )
coll1 = COLLECT(exe1,
               a1.binaries,
               a1.zipfiles,
               a1.datas,
               strip=False,
               upx=False,
               upx_exclude=[],
               name='complex')
pyz2 = PYZ(a2.pure, a2.zipped_data,
             cipher=block_cipher)
exe2 = EXE(pyz2,
          a2.scripts,
          [],
          exclude_binaries=True,
          name='simple',
          debug=False,
          bootloader_ignore_signals=False,
          strip=False,
          upx=False,
          console=True )
coll2 = COLLECT(exe2,
               a2.binaries,
               a2.zipfiles,
               a2.datas,
               strip=False,
               upx=False,
               upx_exclude=[],
               name='simple')

try:
    os.remove("complex.py")
except:
    pass
try:
    os.remove("simple.py")
except:
    pass

Start with the provided complex.spec and trace how each Analysis call sets CONF['xref-file'] and the corresponding dot-file path. Compare the generated paths for the complex.py and simple.py analyses when using MERGE. Done means each analysis produces xref and dot files distinguished by script name without overwriting the previous files.