Update libraries and make it build on windows.

Still gets some warnings because compilers have changed. But should work.

vendor/POCO/CONTRIBUTORS

@@ -45,7 +45,6 @@ Scott Davis
 Kristin Cowalcijk
 Yuval Kashtan
 Christopher Baker
-Scott Davis
 Jeff Adams
 Martin Osborne
 Björn Schramke
@@ -53,3 +52,43 @@ Francis Andre
 Kacper Piwiński
 Hernan Martinez
 Jacky Woo
+Jörg-Christian Böhme
+Matej Kenda
+Tomaž Beltram
+Friedrich Wilckens
+Pavle Dragišić
+Nino Belušić
+Kari Argillander
+Alexander Bychuk
+Andrew Auclair
+Jochen Sprickerhof
+Jesse Hoogervorst
+Aron Budea
+Tou Zhu
+Daniel Grunwald
+Dan Rosser
+Eric Eichhorn
+Jeremy Rifkin
+Jouke Witteveen
+Marc Schlatter
+Marco Rebhan
+Mert Övün
+Mikhail Khachayants
+Nicolau Leal Werneck
+Sergei Trofimovich
+Seyyed Soroosh Hosseinalipour
+Felix Wang
+Thomas Beutlich
+Étienne Dupuis
+lanthora
+siren186
+Lara Dzivdzanovic
+Milan Tepic
+Peter Klotz
+nitram96
+Peter Zmanovsky
+David Roman
+Jonas Bülow
+Alex Xuck
+Mias du Plessis
+Ben Wolsieffer