qt5: reduce closure size

First, closure size is reduced by including the static libraries in $out instead
of trying to move them to $dev. The Qt build system cannot handle libraries
being split between different prefixes. Previously, the static libraries were
moved into $dev and the shared libraries were symlinked from $out to $dev to
fool the build system. However, this causes $dev to be retained at
runtime. Instead, we now keep the static libraries in $out. Fortunately, the
static libraries are not very large anyway.

Second, we build with QT_NO_DEBUG defined unless debugging is enabled. This
causes some assertions to be removed; when assertions are included, they pull
paths from $dev into the runtime closure by using the __FILE__ macro. We also
now patch qtbase to remove even more assertions when QT_NO_DEBUG is defined.

pkgs/development/libraries/qt-5/hooks/qtbase-setup-hook.sh

@@ -4,7 +4,6 @@ qtDocPrefix=@qtDocPrefix@
 
 . @fix_qt_builtin_paths@
 . @fix_qt_module_paths@
-. @fix_qt_static_libs@
 
 providesQtRuntime() {
     [ -d "$1/$qtPluginPrefix" ] || [ -d "$1/$qtQmlPrefix" ]
@@ -67,12 +66,3 @@ postPatchMkspecs() {
 if [ -z "$dontPatchMkspecs" ]; then
     postPhases="${postPhases}${postPhases:+ }postPatchMkspecs"
 fi
-
-postMoveQtStaticLibs() {
-    if [ "z${!outputLib}" != "z${!outputDev}" ]; then
-        fixQtStaticLibs "${!outputLib}" "${!outputDev}"
-    fi
-}
-if [ -z "$dontMoveQtStaticLibs" ]; then
-    postPhases="${postPhases}${postPhases:+ }postMoveQtStaticLibs"
-fi