gplugin/gplugin

Python3 has started shipping multiple pc files so we need to check for all of them similar to lua.

2021-07-23, Gary Kramlich
bf9af95cb6d4
Python3 has started shipping multiple pc files so we need to check for all of them similar to lua.

Testing Done:
Ran on debian unstable with python3.10 and python3.9 installed. pygobject doesn't current work with python3.10 according to the test output but python3.9 worked fine.

```
Dependency pygobject-3.0 found: YES 3.38.0 (cached)
Found pkg-config: /usr/bin/pkg-config (0.29.2)
Run-time dependency python-3.10-embed found: YES 3.10
Checking if "Python3 GI" with dependencies glib-2.0, python-3.10-embed, pygobject-3.0 runs: NO (255)
Message: pygobject does not work with python-3.10-embed
Run-time dependency python-3.9-embed found: YES 3.9
Checking if "Python3 GI" with dependencies glib-2.0, python-3.9-embed, pygobject-3.0 runs: YES
```

Reviewed at https://reviews.imfreedom.org/r/832/
if get_option('tcc')
GPLUGIN_TCC_SOURCES = [
'gplugin-tcc-core.c',
'gplugin-tcc-loader.c',
'gplugin-tcc-plugin.c',
]
GPLUGIN_TCC_HEADERS = [
'gplugin-tcc-loader.h',
'gplugin-tcc-plugin.h',
]
if not compiler.has_header('libtcc.h')
error('libtcc.h not found')
endif
TCC = compiler.find_library('tcc')
gplugin_tcc = shared_library('gplugin-tcc',
GPLUGIN_TCC_SOURCES,
GPLUGIN_TCC_HEADERS,
name_prefix : '',
dependencies : [TCC, gplugin_dep],
install : true,
install_dir : get_option('libdir') / 'gplugin'
)
endif # tcc
subdir('tests')