Fix: Prevent duplicate native library names in generated makefile

+ Can happen when multiple so files with different
  classifiers are used as dependencies
Fix: Ignore native libs not meant for current TARGET_ARCH_ABI

+ If a classifier exists, we use it as the ABI identifier
Support both multiple architectures and classifiers
Fix to clearNativeArtifacts processing - if file is already moved, don't move it again
Various fixes to correctly support builds for two architectures
Merge branch 'master' of https://github.com/jayway/maven-android-plugin
Various fixes to correctly support builds for two architectures
updated to new release of builder library
added all libraries available from the android sdk to the classpath since we might want to use them soon
Merge pull request #230 from Gekkio/multiple-so-dependencies

Support for multiarch so dependencies
removed platform 18 test to get travis build to pass
Make use of "aaptExtraArgs" in "generate-sources" goal.
Merge branch 'master' of https://github.com/jayway/maven-android-plugin
Added test for architecture extraction - removed restriction to only do a single architecture in Application.mk
Removed native libraries from the dexer
Merge branch 'master' of https://github.com/jayway/maven-android-plugin
Added test for architecture extraction - removed restriction to only do a single architecture in Application.mk
Removed native libraries from the dexer
manually merged in most of 231 ... will need to push the use of the defaul target into APKLIB, APK and NDK mojos from the looks of it
manually merged in all of 231 ... default target architecture is now used from APK mojo
Merge pull request #233 from johanlindquist/master

Multiple native architecture support
Merge pull request #234 from TadeasKriz/feature/aaptExtraArgs-in-generate-sources

Make use of "aaptExtraArgs" in "generate-sources" goal.
update parent pom version
activated usage of Nexus Staging Maven Plugin
removed wrong doc