update package apr-util
update packages glibmm gtkmm2
update packages ilmbase openexr
update package poco
update package protobuf
update package wt
package guile: bump ignored version
package libharu: remove ignored version
mingw runtime and api: ignore major version 4.0
package openscenegraph: use developer releases instead of trunk
package glib: remove obsolete AM_PROG_CC_STDC
Merge branch 'master' into multi-rebase