meson: Fix import library name in Windows

This changes the import library name from 'postgres.exe.lib' to
'postgres.lib', which is what it was with the old MSVC build system.
Extension builds use that name.

Bug: #18513
Reported-by: Muralikrishna Bandaru <[email protected]>

Author: petere

meson.build

@@ -201,7 +201,7 @@ if host_system == 'cygwin'
   cppflags += '-D_GNU_SOURCE'
   dlsuffix = '.dll'
   mod_link_args_fmt = ['@0@']
-  mod_link_with_name = 'lib@0@.exe.a'
+  mod_link_with_name = 'lib@[email protected]'
   mod_link_with_dir = 'libdir'
 
 elif host_system == 'darwin'
@@ -273,10 +273,10 @@ elif host_system == 'windows'
   export_file_suffix = 'def'
   if cc.get_id() == 'msvc'
     export_fmt = '/DEF:@0@'
-    mod_link_with_name = '@0@.exe.lib'
+    mod_link_with_name = '@[email protected]'
   else
     export_fmt = '@0@'
-    mod_link_with_name = 'lib@0@.exe.a'
+    mod_link_with_name = 'lib@[email protected]'
   endif
   mod_link_args_fmt = ['@0@']
   mod_link_with_dir = 'libdir'

src/backend/meson.build

@@ -133,7 +133,7 @@ postgres = executable('postgres',
   link_with: backend_link_with,
   link_depends: backend_link_depends,
   export_dynamic: true,
-  implib: true,
+  implib: 'postgres',
   dependencies: backend_build_deps,
   kwargs: default_bin_args,
 )