ndk-build: force the C compiler to build the gstreamer library

_CC is set to the default compiler, which might be g++ instead
of gcc for C++ projects.
oven: print the original tracebac in build step errors
gstreamer-static: use the base class for disable the gtk docs
libogg: add ogg.m4 for the universal build
tremor: disable asm in iOS for now
ndk-build: fix link stage
ios: packager: use a randomly generated uuid for the framework
recipes: gtk: fix configure option
bootstrap: removes spaces in the url after a line break
config: include aclocal folder from the build tools too
build-tools: onyl build tar/xz in OSX
build-tools: fix build of cmake gettext-tools and yasm
README: yasm and cmake are now installed in the bootsrap
config: create the aclocal path for the build-tools too
clutter: keep gettext infrastructure the same in all platforms
gst-ios: generate the XCode templates for iOS
packages:osx: port to pkgbuild + productbuild

PackageMaker has been deprecated in XCode 4.6
gstreamer-ios-templates: rename the gst-ios recipes
packages: add support for post/pre install scripts in osx SDK packages
packages:ios Improve iOS packaging

Create a real .pkg with productbuild, include only the static
library, the header files and the templates and add a post install
script to install the templates where XCode finds them