gplugin/gplugin

Add gplugin_plugin_info_get_id_normalized. Fixes GPLUGIN-128

Testing Done:
Ran the new unit tests

Reviewed at https://reviews.imfreedom.org/r/131/
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')