OpenSSL wrap is not usable as shared library with MSVC

[QuLogic]

When building with MSVC, it fails to find crypto.lib if linking to a shared library version of OpenSSL. I believe this occurs when no symbols are exported. From what I can tell of upstream, you would need to define _WINDLL in order for it to export symbols: https://github.com/openssl/openssl/blob/cf6342bc024868f5a55f2225f2e083415fb1329a/include/openssl/e_os2.h#L97-L98

[QuLogic]

If I add _WINDLL to:

wrapdb/subprojects/packagefiles/openssl/meson.build

Lines 258 to 265 in 3cda0d6

	defines += [
	## default of Win. See INSTALL in openssl repo.
	'OPENSSLDIR="C:\\Program Files\\Common Files\\SSL"',
	'ENGINESDIR="NUL"',
	'MODULESDIR="NUL"',
	'OPENSSL_SYS_WIN32', 'WIN32_LEAN_AND_MEAN', 'L_ENDIAN',
	'_CRT_SECURE_NO_DEPRECATE', 'UNICODE', '_UNICODE',
	]

then crypto.lib is produced, but then when linking ssl.dll, I get:

subprojects\openssl-3.0.8\ssl.dll : fatal error LNK1120: 495 unresolved externals

I'm not sure if that's an upstream problem, or if that's not the right place in the Meson overlay.

[QuLogic]

Perhaps _WINDLL does (next-to-)nothing, and this mkdef.pl is what produces the linker script to export symbols.

[QuLogic]

I could've sworn I searched for this before, but it's a duplicate of #181. I'll try the linked #1283.