package/python-psycopg2: add config dependencies from postgresql

Also update site url to https://github.com/psycopg/psycopg2/

Signed-off-by: Scott Fan <fancp2007@gmail.com>
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>
(cherry picked from commit a0964a91579a4b1135a96588c7bfcae4663d8678)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/python-psycopg2/Config.in

@@ -1,6 +1,8 @@
 config BR2_PACKAGE_PYTHON_PSYCOPG2
 	bool "python-psycopg2"
+	depends on BR2_USE_MMU # postgresql
 	depends on BR2_USE_WCHAR # postgresql
+	depends on !BR2_STATIC_LIBS # postgresql
 	depends on !BR2_OPTIMIZE_FAST # postgresql
 	select BR2_PACKAGE_POSTGRESQL
 	help
@@ -21,10 +23,11 @@ config BR2_PACKAGE_PYTHON_PSYCOPG2
 	  customized thanks to a flexible objects adaptation system.
 	  Psycopg 2 is both Unicode and Python 3 friendly.
 
-	  http://initd.org/psycopg/
+	  https://github.com/psycopg/psycopg2/
 
-comment "python-psycopg2 needs a toolchain w/ wchar"
-	depends on !BR2_USE_WCHAR
+comment "python-psycopg2 needs a toolchain w/ dynamic library, wchar"
+	depends on BR2_USE_MMU
+	depends on BR2_STATIC_LIBS || !BR2_USE_WCHAR
 
 comment "python-psycopg2 can't be built with Optimize for fast"
 	depends on BR2_OPTIMIZE_FAST