packages qt qtbase: install pkgconfig files in standard location
disable stl for wxWidgets as it seems to be very problematic:

http://www.wxwidgets.org/docs/faqgen.htm#stl
new package libusb1

This is a package for the libusb-1.0 shared library (MXE package name
"libusb1") used by various projects. It is not to be confused with the
older libusb-0.1 library (MXE package name "libusb") which is a
completely different library with different API. Both libs are in
wide-spread use and can be installed in parallel.
Makefile and docs: add EXCLUDE_PKGS and show*deps* functionality
Merge pull request #227 from uwehermann/libusb1

new package libusb1
add package pkgconf (optional native build)
doc update: add EDITOR to env whitelist for interactive sessions
doc update: add MXE to env whitelist for interactive sessions
new package libftdi1
update package pkgconf
Merge pull request #226 from abma/master

disable stl for wxWidgets as it seems to be very problematic:
Merge pull request #229 from uwehermann/libftdi1

new package libftdi1
package gdk-pixbuf: explicitly call aclocal and automake
Merge pull request #230 from koneu/master

package gdk-pixbuf: explicitly call aclocal and automake
add optional native autotools bison cmake flex libtool packages
packages automake libtool: fix deps for native builds
Revert "update package pkgconf"

This reverts commit 68a73a314cbef967e5122e21c7b8e1fac8f59f49.
add config.guess to tools so its available prior to any package builds
Makefile: add BUILD variable and add to target loop and PATH
package libtool: separate binary from library (new package libltdl)