[libpq] Add support for dynamic builds with Visual Studio

[SSE4]

• Fix source file lists to avoid link errors and to behave be as close as possible to the original MSVC projects.
• Generate more complete pg_config.h.
• Use .def file to make exported symbols work as expected.
• Add missing wldap32 library link in package_info().
• Enable dynamc build in conanfile.py

Specify library name and version: libpq/11.5

• I've read the guidelines for contributing.
• I've followed the PEP8 style guides for Python code in the recipes.
• I've used the latest Conan client version.
• I've tried at least one configuration locally with the
  conan-center hook activated.

Original related bug report: bincrafters/conan-libpq#25
Original PR: #143

[SSE4]

@Talkless FYI I am going to implement an official way to build project for Visual Studio:
https://www.postgresql.org/docs/8.3/install-win32-libpq.html
https://github.com/postgres/postgres/blob/master/src/tools/msvc/README

[Talkless]

@Talkless FYI I am going to implement an official way to build project for Visual Studio:

That would be best of course, good luck!

[Talkless]

@SSE4 I believe PostgreSQL requires ActivePerl, while Conan has Strawberry Perl only? And for ActivePerl you need to register to download.. so I kinda doubt we can package that..?

[SSE4]

@Talkless I'll check it and let you know

[conan-center-bot]

Some configurations of 'libpq/11.5' have failed:

• Linux x86_64, Release, gcc 5, libstdc++ . Options: libpq:shared-True
  • Hooks errors detected:
    • [HOOK - conan-center.py] pre_export(): ERROR: [META LINES (KB-H025)] PEP 263 (encoding) is not allowed in the conanfile. Remove the line 1 (https://github.com/conan-io/conan-center-index/wiki/Error-Knowledge-Base#KB-H025)
    • [HOOK - conan-center.py] pre_export(): ERROR: [TEST PACKAGE - RUN ENVIRONMENT (KB-H029)] The 'RunEnvironment()' build helper is no longer needed. It has been integrated into the self.run(..., run_environment=True) (https://github.com/conan-io/conan-center-index/wiki/Error-Knowledge-Base#KB-H029)
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[SSE4]

@Talkless I've checked locally, and it builds fine with StrawberryPerl

[conan-center-bot]

Some configurations of 'libpq/11.5' have failed:

• Linux x86_64, Release, gcc 5, libstdc++ . Options: libpq:shared-True
  • Hooks errors detected:
    • [HOOK - conan-center.py] pre_export(): ERROR: [META LINES (KB-H025)] PEP 263 (encoding) is not allowed in the conanfile. Remove the line 1 (https://github.com/conan-io/conan-center-index/wiki/Error-Knowledge-Base#KB-H025)
    • [HOOK - conan-center.py] pre_export(): ERROR: [TEST PACKAGE - RUN ENVIRONMENT (KB-H029)] The 'RunEnvironment()' build helper is no longer needed. It has been integrated into the self.run(..., run_environment=True) (https://github.com/conan-io/conan-center-index/wiki/Error-Knowledge-Base#KB-H029)
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[conan-center-bot]

Some configurations of 'libpq/11.5' have failed:

• Windows x86_64, Debug, Visual Studio 14, MTd. Options: libpq:shared-False
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[SSE4]

@lasote is it possible some slave(s) use older (cached) version of packages?
e.g. strawberry perl still misses pc files:

Can't locate Win32API/File/cFile.pc in @INC (@INC contains: C:\J\c3ipr\pr_188_3_0_2\.conan\data\libpq\11.5\_\_\build\3a39ecdadc1d316422be7204374ad529b5fd8b77\source_subfolder\src\tools\msvc C:/J/c3ipr/pr_188_3_0_2/.short/574618/1/lib) at C:/J/c3ipr/pr_188_3_0_2/.short/574618/1/lib/Win32API/File.pm line 177.

but it was fixed at #189 (and works locally)

[Talkless]

What's up with all these closes-reopnes? :)

[SSE4]

@Talkless CI didn't relaunch build, and nothing helped (tried new commit, force push, open/close PR, open new PR, etc.). the only thing helped - creating another branch. there is an issue on CI side, but don't worry, there is new PR: #231