plugins: make plugins shared modules again

This reverts the main part of commit 4a264252a7.

As plugins are the prime use case for `shared_module`
getting rid of the warning from meson about linking against shared modules
weighs less heavy.

plugins/dummy/meson.build

@@ -46,11 +46,10 @@ dummy_sources = files(
   ]
 )
 
-calls_dummy = shared_library(
+calls_dummy = shared_module(
   'dummy',
   dummy_sources,
   dependencies: dummy_deps,
-  link_args: '-Wl,--unresolved-symbols=ignore-in-object-files',
   include_directories: src_include,
   install: true,
   install_dir: dummy_install_dir

plugins/mm/meson.build

@@ -46,11 +46,10 @@ mm_sources = files(
   ]
 )
 
-calls_mm = shared_library(
+calls_mm = shared_module(
   'mm',
   mm_sources,
   dependencies: mm_deps,
-  link_args: '-Wl,--unresolved-symbols=ignore-in-object-files',
   include_directories: src_include,
   install: true,
   install_dir: mm_install_dir

plugins/ofono/meson.build

@@ -46,11 +46,10 @@ ofono_sources = files(
   ]
 )
 
-calls_ofono = shared_library(
+calls_ofono = shared_module(
   'ofono',
   ofono_sources, gdbofono_headers,
   dependencies: ofono_deps,
-  link_args: '-Wl,--unresolved-symbols=ignore-in-object-files',
   include_directories: [
     src_include,
     include_directories('.')

plugins/sip/meson.build

@@ -64,11 +64,10 @@ sip_enums = gnome.mkenums('calls-sip-enums',
 
 sip_sources += sip_enums
 
-calls_sip = shared_library(
+calls_sip = shared_module(
   'sip',
   sip_sources, config_h,
   dependencies: sip_deps,
-  link_args: '-Wl,--unresolved-symbols=ignore-in-object-files',
   include_directories: src_include,
   install: true,
   install_dir: sip_install_dir