Retrieve cross-compile host from CC (not host)
Retrieve cross-compile host from CC (not host)

Use this to build sqlite3 for the right platform since the generated
triplet for i586-mingw32msvc was incorrect.

Feed the recipe installation location to the cross-configure options
so the Ruby extension finds the proper headers and libs.

alexdowad/sqlite3-ruby,duhlin/sqlite3-ruby,AutogrowSystems/sqlite3-ruby,AutogrowSystems/sqlite3-ruby,alexdowad/sqlite3-ruby,duhlin/sqlite3-ruby